diff --git a/ccm-cms/src/main/java/org/librecms/ui/contentsections/CategoriesController.java b/ccm-cms/src/main/java/org/librecms/ui/contentsections/CategoriesController.java
index 663270fcc..710e2e093 100644
--- a/ccm-cms/src/main/java/org/librecms/ui/contentsections/CategoriesController.java
+++ b/ccm-cms/src/main/java/org/librecms/ui/contentsections/CategoriesController.java
@@ -628,6 +628,31 @@ public class CategoriesController {
         }
     }
 
+    @POST
+    @Path("/{context}/categories/@subcategories")
+    @AuthorizationRequired
+    @Transactional(Transactional.TxType.REQUIRED)
+    public String addSubcategory(
+        @PathParam("sectionIdentifier") final String sectionIdentifier,
+        @PathParam("context") final String context,
+        @FormParam("categoryName") final String categoryName,
+        @FormParam("uniqueId") final String uniqueId,
+        @FormParam("isEnabled") final String isEnabled,
+        @FormParam("isVisible") final String isVisible,
+        @FormParam("isAbstract") final String isAbstract
+    ) {
+        return addSubcategory(
+            sectionIdentifier,
+            context, 
+            "/",
+            categoryName,
+            uniqueId,
+            isEnabled,
+            isVisible,
+            isAbstract
+        );
+    }
+
     @POST
     @Path("/{context}/categories/{categoryPath:(.+)?}/@subcategories")
     @AuthorizationRequired
@@ -650,9 +675,10 @@ public class CategoriesController {
             final Category subCategory = new Category();
             subCategory.setName(categoryName);
             subCategory.setUniqueId(uniqueId);
-            subCategory.setEnabled(Objects.equals("true", isEnabled));
-            subCategory.setVisible(Objects.equals("true", isVisible));
-            subCategory.setAbstractCategory(Objects.equals("true", isAbstract));
+            subCategory.setEnabled(Objects.equals("on", isEnabled));
+            subCategory.setVisible(Objects.equals("on", isVisible));
+            subCategory.setAbstractCategory(Objects.equals("on", isAbstract));
+            categoryRepo.save(subCategory);
             categoryManager.addSubCategoryToCategory(subCategory, category);
             return String.format(
                 "redirect:/%s/categorysystems/%s/categories/%s",
@@ -803,7 +829,7 @@ public class CategoriesController {
                     // Nothing
                     break;
             }
-
+            
             return String.format(
                 "redirect:/%s/categorysystems/%s/categories/%s",
                 sectionIdentifier,
diff --git a/ccm-cms/src/main/resources/WEB-INF/views/org/librecms/ui/contentsection/categorysystems/categorysystem.xhtml b/ccm-cms/src/main/resources/WEB-INF/views/org/librecms/ui/contentsection/categorysystems/categorysystem.xhtml
index f96ebf00e..e0dc4bb87 100644
--- a/ccm-cms/src/main/resources/WEB-INF/views/org/librecms/ui/contentsection/categorysystems/categorysystem.xhtml
+++ b/ccm-cms/src/main/resources/WEB-INF/views/org/librecms/ui/contentsection/categorysystems/categorysystem.xhtml
@@ -184,15 +184,6 @@
                             </div>
                         </div>
 
-                        <!--<h2>#{CmsAdminMessages.getMessage("contentsection.categorysystems.category.titles.heading", [CategorySystemModel.selectedCategory.name])}</h2>-->
-                        <ul>
-                            <c:forEach items="#{CategorySystemModel.selectedCategory.unusedTitleLocales}" var="locale">
-                                <li>
-                                    <code>#{locale}</code>
-                                </li>
-                            </c:forEach>
-                        </ul>
-                        <pre>#{CategorySystemModel.selectedCategory.hasUnusedTitleLocales}</pre>
                         <libreccm:localizedStringEditor addMethod="#{mvc.basePath}/#{ContentSectionModel.sectionName}/categorysystems/#{CategorySystemModel.selectedCategorySystem.context}/categories#{CategorySystemModel.selectedCategory.path}/@title/add"
                                                         addButtonLabel="#{CmsAdminMessages['contentsection.categorysystems.category.titles.add.label']}"
                                                         addDialogCancelLabel="#{CmsAdminMessages['contentsection.categorysystems.category.titles.add.cancel']}"
@@ -227,7 +218,6 @@
                                                         unusedLocales="#{CategorySystemModel.selectedCategory.unusedTitleLocales}"
                                                         values="#{CategorySystemModel.selectedCategory.localizedTitles}" />
 
-<!--<h2>#{CmsAdminMessages.getMessage("contentsection.categorysystems.category.descriptions.heading", [CategorySystemModel.selectedCategory.name])}</h2>-->
                         <libreccm:localizedStringEditor addMethod="#{mvc.basePath}/#{ContentSectionModel.sectionName}/categorysystems/#{CategorySystemModel.selectedCategorySystem.context}/categories#{CategorySystemModel.selectedCategory.path}/@description/add"
                                                         addButtonLabel="#{CmsAdminMessages['contentsection.categorysystems.category.descriptions.add.label']}"
                                                         addDialogCancelLabel="#{CmsAdminMessages['contentsection.categorysystems.category.descriptions.add.cancel']}"
@@ -263,6 +253,190 @@
                                                         useTextarea="true"
                                                         values="#{CategorySystemModel.selectedCategory.localizedDescriptions}" />
 
+                        <h2 id="subcategories-section">#{CmsAdminMessages['contentsection.categorysystems.category.subcategories.heading']}</h2>
+                        <div class="mb-2">
+                            <div class="text-right">
+                                <button class="btn btn-secondary" 
+                                        data-target="#add-subcategory-dialog"
+                                        data-toggle="modal"
+                                        type="button">
+                                    <bootstrap:svgIcon icon="plus-circle" />
+                                    <span>#{CmsAdminMessages['contentsections.categorysystems.category.subcategories.add']}</span>
+                                </button>
+                            </div>
+                            <div aria-describedby="add-subcategory-dialog-title"
+                                 aria-hidden="true"
+                                 class="modal fade"
+                                 id="add-subcategory-dialog"
+                                 tabindex="-1">
+                                <div class="modal-dialog">
+                                    <form action="#{mvc.basePath}/#{ContentSectionModel.sectionName}/categorysystems/#{CategorySystemModel.selectedCategorySystem.context}/categories#{CategorySystemModel.selectedCategory.path}/@subcategories"
+                                          class="modal-content"
+                                          method="post">
+                                        <div class="modal-header">
+                                            <h3 class="modal-title"
+                                                id="add-subcategory-dialog-title">
+                                                #{CmsAdminMessages['contentsections.categorysystems.category.subcategories.add.title']}
+                                            </h3>
+                                            <button aria-label="#{CmsAdminMessages['contentsections.categorysystems.category.subcategories.add.close']}"
+                                                    class="close" 
+                                                    data-dismiss="modal"
+                                                    type="button"  >
+                                                <span aria-hidden="true">&times;</span>
+                                            </button>
+                                        </div>
+                                        <div class="modal-body">
+                                            <bootstrap:formGroupText help="#{CmsAdminMessages['contentsections.categorysystems.category.subcategories.add.name.help']}"
+                                                                     inputId="name"
+                                                                     label="#{CmsAdminMessages['contentsections.categorysystems.category.subcategories.add.name.label']}"
+                                                                     name="categoryName"
+                                                                     pattern="[\\w-.]*"
+                                                                     required="true" />
+                                            <bootstrap:formGroupText help="#{CmsAdminMessages['contentsections.categorysystems.category.subcategories.add.uniqueId.help']}" 
+                                                                     inputId="uniqueId" 
+                                                                     label="#{CmsAdminMessages['contentsections.categorysystems.category.subcategories.add.label']}" 
+                                                                     name="uniqueId" 
+                                                                     required="false" />
+                                            <bootstrap:formCheck label="#{CmsAdminMessages['contentsections.categorysystems.category.subcategories.add.enabled.label']}"
+                                                                 inputId="enabled"
+                                                                 name="isEnabled" />
+                                            <bootstrap:formCheck label="#{CmsAdminMessages['contentsections.categorysystems.category.subcategories.add.visible.label']}"
+                                                                 inputId="visible"
+                                                                 name="isVisible" />
+                                            <bootstrap:formCheck label="#{CmsAdminMessages['contentsections.categorysystems.category.subcategories.add.abstractCategory.label']}"
+                                                                 inputId="abstractCategory"
+                                                                 name="isAbstract" />
+                                        </div>
+                                        <div class="modal-footer">
+                                            <button class="btn btn-warning"
+                                                    data-dismiss="modal"
+                                                    type="button">
+                                                #{CmsAdminMessages['contentsections.categorysystems.category.subcategories.add.close']}
+                                            </button>
+                                            <button class="btn btn-success"
+                                                    type="submit">
+                                                #{CmsAdminMessages['contentsections.categorysystems.category.subcategories.add.submit']}
+                                            </button>
+                                        </div>
+                                    </form>
+                                </div>
+                            </div>
+                        </div>
+                        <c:choose>
+                            <c:when test="#{CategorySystemModel.selectedCategory.subCategories.isEmpty()}">
+                                <p>
+                                    #{CmsAdminMessages['contentsections.categorysystems.category.subcategories.none']}
+                                </p>
+                            </c:when>
+                            <c:otherwise>
+                                <table class="table table-hover contentsections categories-table">
+                                    <thead>
+                                        <tr>
+                                            <th scope="col">
+                                                #{CmsAdminMessages['contentsections.categorysystems.category.subcategories.name']}
+                                            </th>
+                                            <th scope="col">
+                                                #{CmsAdminMessages['contentsections.categorysystems.category.subcategories.enabled']}
+                                            </th>
+                                            <th>
+                                                #{CmsAdminMessages['contentsections.categorysystems.category.subcategories.visible']}
+                                            </th>
+                                            <th>
+                                                #{CmsAdminMessages['contentsections.categorysystems.category.subcategories..abstract']}
+                                            </th>
+                                            <th class="actions-col text-center" 
+                                                colspan="3">
+                                                #{CmsAdminMessages['contentsections.categorysystems.category.subcategories.actions']}
+                                            </th>
+                                        </tr>
+                                    </thead>
+                                    <tbody>
+                                        <c:forEach items="#{CategorySystemModel.selectedCategory.subCategories}"
+                                                   var="category">
+                                            <tr>
+                                                <td>
+                                                    <a href="#{mvc.basePath}/#{ContentSectionModel.sectionName}/categorysystems/#{CategorySystemModel.selectedCategorySystem.context}/categories#{category.path}">
+                                                        #{category.name}
+                                                    </a>
+                                                </td>
+                                                <td>
+                                                    <c:choose>
+                                                        <c:when test="#{category.enabled}">
+                                                            #{CmsAdminMessages['contentsections.categorysystems.category.subcategories.enabled.yes']}
+                                                        </c:when>
+                                                        <c:otherwise>
+                                                            #{CmsAdminMessages['contentsections.categorysystems.category.subcategories.enabled.no']}
+                                                        </c:otherwise>
+                                                    </c:choose>
+                                                </td>
+                                                <td>
+                                                    <c:choose>
+                                                        <c:when test="#{category.visible}">
+                                                            #{CmsAdminMessages['contentsections.categorysystems.category.subcategories.visible.yes']}
+                                                        </c:when>
+                                                        <c:otherwise>
+                                                            #{CmsAdminMessages['contentsections.categorysystems.category.subcategories.visible.no']}
+                                                        </c:otherwise>
+                                                    </c:choose>
+                                                </td>
+                                                <td>
+                                                    <c:choose>
+                                                        <c:when test="#{category.abstractCategory}">
+                                                            #{CmsAdminMessages['contentsections.categorysystems.category.subcategories.abstract.yes']}
+                                                        </c:when>
+                                                        <c:otherwise>
+                                                            #{CmsAdminMessages['contentsections.categorysystems.category.subcategories.abstract.no']}
+                                                        </c:otherwise>
+                                                    </c:choose>
+                                                </td>
+                                                <td class="actions-order-col">
+                                                    <c:if test="#{category.categoryOrder != 1}">
+                                                        <form action="#{mvc.basePath}/#{ContentSectionModel.sectionName}/categorysystems/#{CategorySystemModel.selectedCategorySystem.context}/categories#{category.path}/@order"
+                                                              method="post">
+                                                            <input name="direction" 
+                                                                   value="DECREASE"
+                                                                   type="hidden" />
+                                                            <button class="btn btn-info"
+                                                                    type="submit">
+                                                                <bootstrap:svgIcon icon="caret-up-fill" />
+                                                                <span class="sr-only">#{CmsAdminMessages['contentsections.categorysystems.category.subcategories.reorder.decrease']}</span>
+                                                            </button>
+                                                        </form>
+                                                    </c:if>
+                                                </td>
+                                                <td class="actions-order-col">
+                                                    <c:if test="#{category.categoryOrder lt (CategorySystemModel.selectedCategory.subCategories.size())}">
+                                                        <form action="#{mvc.basePath}/#{ContentSectionModel.sectionName}/categorysystems/#{CategorySystemModel.selectedCategorySystem.context}/categories#{category.path}/@order"
+                                                              method="post">
+                                                            <input name="direction" 
+                                                                   value="INCREASE"
+                                                                   type="hidden" />
+                                                            <button class="btn btn-info"
+                                                                    type="submit">
+                                                                <bootstrap:svgIcon icon="caret-down-fill" />
+                                                                <span class="sr-only">#{CmsAdminMessages['contentsections.categorysystems.category.subcategories.reorder.increase']}</span>
+                                                            </button>
+                                                        </form>
+                                                    </c:if>
+                                                </td>
+                                                <td class="actions-delete-col">
+                                                    <libreccm:deleteDialog
+                                                        actionTarget="#{mvc.basePath}/#{ContentSectionModel.sectionName}/categorysystems/#{CategorySystemModel.selectedCategorySystem.context}/categories#{category.path}/@delete"
+                                                        buttonText="#{CmsAdminMessages['contentsections.categorysystems.category.subcategories.delete']}"
+                                                        buttonTextClass="text-center"
+                                                        cancelLabel="#{CmsAdminMessages['contentsections.categorysystems.category.subcategories.delete.cancel']}"
+                                                        confirmLabel="#{CmsAdminMessages['contentsections.categorysystems.category.subcategories.delete.confirm']}"
+                                                        dialogId="categories-subcategories-#{category.categoryId}-delete"
+                                                        dialogTitle="#{CmsAdminMessages['contentsections.categorysystems.category.subcategories.delete.title']}"
+                                                        message="#{CmsAdminMessages.getMessage('contentsections.categorysystems.category.subcategories.delete.message', [category.path])}" 
+                                                        />
+                                                </td>
+                                            </tr>
+                                        </c:forEach>
+                                    </tbody>
+                                </table>
+                            </c:otherwise>
+                        </c:choose>
                     </div>
                 </div>
             </div>
diff --git a/ccm-cms/src/main/resources/org/librecms/CmsAdminMessages.properties b/ccm-cms/src/main/resources/org/librecms/CmsAdminMessages.properties
index 4f84feb2e..7f22c2b86 100644
--- a/ccm-cms/src/main/resources/org/librecms/CmsAdminMessages.properties
+++ b/ccm-cms/src/main/resources/org/librecms/CmsAdminMessages.properties
@@ -171,7 +171,7 @@ contentsecton.categorysystems.category.properties.edit.dialog.cancel=Cancel
 contentsecton.categorysystems.category.properties.edit.dialog.save=Save
 contentsecton.categorysystems.category.properties.edit.dialog.name.help=Name of the category. May only contain the letters, numbers and hypens.
 contentsecton.categorysystems.category.properties.edit.dialog.name.label=Name
-contentsecton.categorysystems.category.properties.edit.dialog.unique_id.help=Unique ID of the new category. Should be unique for the complete category system
+contentsecton.categorysystems.category.properties.edit.dialog.unique_id.help=Unique ID of the category. Should be unique for the complete category system
 contentsecton.categorysystems.category.properties.edit.dialog.unique_id.label=Unique ID
 contentsecton.categorysystems.category.properties.edit.dialog.enabled.label=Enabled
 contentsecton.categorysystems.category.properties.edit.dialog.visible.label=Visible?
@@ -231,3 +231,34 @@ contentsection.categorysystems.category.descriptions.add.add.title=Add localized
 contentsection.categorysystems.category.titles.value.heading=Localized title
 contentsection.categorysystems.category.descriptions.value.heading=Localized description
 contentsection.categorysystems.category.descriptions.title=Localized Descriptions
+contentsection.categorysystems.category.subcategories.heading=Subcategories
+contentsections.categorysystems.category.subcategories.add=Add subcategory
+contentsections.categorysystems.category.subcategories.none=No subcategories
+contentsections.categorysystems.category.subcategories.name=Name
+contentsections.categorysystems.category.subcategories.enabled=Enabled?
+contentsections.categorysystems.category.subcategories.visible=Visible?
+contentsections.categorysystems.category.subcategories..abstract=Abstract?
+contentsections.categorysystems.category.subcategories.actions=Actions
+contentsections.categorysystems.category.subcategories.enabled.yes=Yes
+contentsections.categorysystems.category.subcategories.enabled.no=No
+contentsections.categorysystems.category.subcategories.visible.yes=Yes
+contentsections.categorysystems.category.subcategories.visible.no=No
+contentsections.categorysystems.category.subcategories.abstract.yes=Yes
+contentsections.categorysystems.category.subcategories.abstract.no=No
+contentsections.categorysystems.category.subcategories.reorder.decrease=Up
+contentsections.categorysystems.category.subcategories.reorder.increase=Down
+contentsections.categorysystems.category.subcategories.delete=Delete
+contentsections.categorysystems.category.subcategories.delete.cancel=Cancel
+contentsections.categorysystems.category.subcategories.delete.confirm=Delete category
+contentsections.categorysystems.category.subcategories.delete.title=Confirm category deletion
+contentsections.categorysystems.category.subcategories.delete.message=Are you sure to delete category {0}?
+contentsections.categorysystems.category.subcategories.add.title=Add subcategory
+contentsections.categorysystems.category.subcategories.add.close=Cancel
+contentsections.categorysystems.category.subcategories.add.submit=Create new subcategory
+contentsections.categorysystems.category.subcategories.add.name.help=Name of the new subcategory. May only contain the letters, numbers and hypens.
+contentsections.categorysystems.category.subcategories.add.name.label=Name
+contentsections.categorysystems.category.subcategories.add.uniqueId.help=Unique ID of the new subcategory. Should be unique for the complete category system
+contentsections.categorysystems.category.subcategories.add.label=Unique ID
+contentsections.categorysystems.category.subcategories.add.enabled.label=Enabled?
+contentsections.categorysystems.category.subcategories.add.visible.label=Visible?
+contentsections.categorysystems.category.subcategories.add.abstractCategory.label=Abstract?
diff --git a/ccm-cms/src/main/resources/org/librecms/CmsAdminMessages_de.properties b/ccm-cms/src/main/resources/org/librecms/CmsAdminMessages_de.properties
index 09a9301e9..044ed9261 100644
--- a/ccm-cms/src/main/resources/org/librecms/CmsAdminMessages_de.properties
+++ b/ccm-cms/src/main/resources/org/librecms/CmsAdminMessages_de.properties
@@ -232,3 +232,34 @@ contentsection.categorysystems.category.descriptions.locale.description=Lokalisi
 contentsection.categorysystems.category.titles.value.heading=Lokalisierter Titel
 contentsection.categorysystems.category.descriptions.value.heading=Lokalisierte Beschreibung
 contentsection.categorysystems.category.descriptions.title=Lokaliserte Beschreibungen
+contentsection.categorysystems.category.subcategories.heading=Subkategorien
+contentsections.categorysystems.category.subcategories.add=Subkategorie hinzuf\u00fcgen
+contentsections.categorysystems.category.subcategories.none=Keine Subkategorien
+contentsections.categorysystems.category.subcategories.name=Name
+contentsections.categorysystems.category.subcategories.enabled=Aktiv?
+contentsections.categorysystems.category.subcategories.visible=Sichtbar?
+contentsections.categorysystems.category.subcategories..abstract=Abstrakt?
+contentsections.categorysystems.category.subcategories.actions=Aktionen
+contentsections.categorysystems.category.subcategories.enabled.yes=Ja
+contentsections.categorysystems.category.subcategories.enabled.no=Nein
+contentsections.categorysystems.category.subcategories.visible.yes=Ja
+contentsections.categorysystems.category.subcategories.visible.no=Nein
+contentsections.categorysystems.category.subcategories.abstract.yes=Ja
+contentsections.categorysystems.category.subcategories.abstract.no=Nein
+contentsections.categorysystems.category.subcategories.reorder.decrease=Hoch
+contentsections.categorysystems.category.subcategories.reorder.increase=Runter
+contentsections.categorysystems.category.subcategories.delete=L\u00f6schen
+contentsections.categorysystems.category.subcategories.delete.cancel=Abbrechen
+contentsections.categorysystems.category.subcategories.delete.confirm=Kategorie l\u00f6schen
+contentsections.categorysystems.category.subcategories.delete.title=L\u00f6schen der Kategorie best\u00e4tigen
+contentsections.categorysystems.category.subcategories.delete.message=Sind Sie sicher, dass Sie die Kategorie {0} l\u00f6schen wollen?
+contentsections.categorysystems.category.subcategories.add.title=Subkategorie hinzuf\u00fcgen
+contentsections.categorysystems.category.subcategories.add.close=Abbrechen
+contentsections.categorysystems.category.subcategories.add.submit=Subkategorie anlegen
+contentsections.categorysystems.category.subcategories.add.name.help=Name der neuen Unterkategorie. Darf nur Buchstaben, Zahlen und den Bindestrich enthalten.
+contentsections.categorysystems.category.subcategories.add.name.label=Name
+contentsections.categorysystems.category.subcategories.add.uniqueId.help=Eindeutige ID der neuen Subkategorie. Sollte innerhalb des gesamten Kategoriensystems eindeutig sein.
+contentsections.categorysystems.category.subcategories.add.label=Eindeutige ID
+contentsections.categorysystems.category.subcategories.add.enabled.label=Aktiv?
+contentsections.categorysystems.category.subcategories.add.visible.label=Sichtbar?
+contentsections.categorysystems.category.subcategories.add.abstractCategory.label=Abstrakt?
diff --git a/ccm-cms/src/main/scss/content-sections/_custom.scss b/ccm-cms/src/main/scss/content-sections/_custom.scss
index 12780c6ac..42596be4b 100644
--- a/ccm-cms/src/main/scss/content-sections/_custom.scss
+++ b/ccm-cms/src/main/scss/content-sections/_custom.scss
@@ -89,4 +89,14 @@ table.contentsections-table {
 
 table.permissions-table td.permissions-col {
     font-size: 2em;
+}
+
+table.contentsections.categories-table {
+    td.actions-order-col {
+        width: 1em;
+    }
+    
+    td.actions-delete-col {
+        width: 9em;
+    }
 }
\ No newline at end of file