diff --git a/sci-types-project/src/main/java/org/scientificcms/contenttypes/sciproject/SciProjectMananger.java b/sci-types-project/src/main/java/org/scientificcms/contenttypes/sciproject/SciProjectMananger.java
index 06f1424..a005391 100644
--- a/sci-types-project/src/main/java/org/scientificcms/contenttypes/sciproject/SciProjectMananger.java
+++ b/sci-types-project/src/main/java/org/scientificcms/contenttypes/sciproject/SciProjectMananger.java
@@ -130,9 +130,13 @@ public class SciProjectMananger implements Serializable {
         final Optional<Membership> result = fromProject
             .getMembers()
             .stream()
-            .filter(membership -> filterMembership(membership,
-                                                   person,
-                                                   fromProject))
+            .filter(
+                membership -> filterMembership(
+                    membership,
+                    person,
+                    fromProject
+                )
+            )
             .findFirst();
 
         if (result.isPresent()) {
diff --git a/sci-types-project/src/main/java/org/scientificcms/contenttypes/sciproject/ui/SciProjectDescriptionStep.java b/sci-types-project/src/main/java/org/scientificcms/contenttypes/sciproject/ui/SciProjectDescriptionStep.java
index d35d984..bfbf9b5 100644
--- a/sci-types-project/src/main/java/org/scientificcms/contenttypes/sciproject/ui/SciProjectDescriptionStep.java
+++ b/sci-types-project/src/main/java/org/scientificcms/contenttypes/sciproject/ui/SciProjectDescriptionStep.java
@@ -533,8 +533,28 @@ public class SciProjectDescriptionStep extends AbstractMvcAuthoringStep {
         }
 
         if (itemPermissionChecker.canEditItem(getProject())) {
-            final Optional<Person> result = assetRepo
-                .findByUuidAndType(personUuid, Person.class);
+            final Optional<Person> result;
+            final Identifier personIdentifier = identifierParser
+                .parseIdentifier(personUuid);
+            switch (personIdentifier.getType()) {
+                case ID:
+                    result = assetRepo.findById(
+                        Long.parseLong(personIdentifier.getIdentifier()),
+                        Person.class
+                    );
+                    break;
+                case UUID:
+                    result = assetRepo
+                        .findByUuidAndType(
+                            personIdentifier.getIdentifier(),
+                            Person.class
+                        );
+                    break;
+                default:
+                    models.put("personNotFound", personUuid);
+                    return showStep(sectionIdentifier, documentPath);
+
+            }
 
             if (!result.isPresent()) {
                 models.put("personNotFound", personUuid);
@@ -565,7 +585,7 @@ public class SciProjectDescriptionStep extends AbstractMvcAuthoringStep {
     }
 
     @POST
-    @Path("/members/edit/{membershipId")
+    @Path("/members/edit/{membershipId}")
     @Transactional(Transactional.TxType.REQUIRED)
     @AuthorizationRequired
     public String editMembership(
@@ -620,7 +640,7 @@ public class SciProjectDescriptionStep extends AbstractMvcAuthoringStep {
     }
 
     @POST
-    @Path("/members/remove")
+    @Path("/members/remove/{membershipId}")
     @Transactional(Transactional.TxType.REQUIRED)
     @AuthorizationRequired
     public String removeMembership(
@@ -628,7 +648,7 @@ public class SciProjectDescriptionStep extends AbstractMvcAuthoringStep {
         final String sectionIdentifier,
         @PathParam(MvcAuthoringSteps.DOCUMENT_PATH_PATH_PARAM_NAME)
         final String documentPath,
-        @FormParam("membershipId")
+        @PathParam("membershipId")
         final String membershipId
     ) {
         try {
@@ -778,6 +798,7 @@ public class SciProjectDescriptionStep extends AbstractMvcAuthoringStep {
         model.setPrefix(
             membership.getMember().getPersonName().getPrefix()
         );
+        model.setRole(membership.getRole());
         model.setStatus(Objects.toString(membership.getStatus()));
         model.setSuffix(
             membership.getMember().getPersonName().getSuffix()
diff --git a/sci-types-project/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/sciproject/ui/sciproject-description.xhtml b/sci-types-project/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/sciproject/ui/sciproject-description.xhtml
index 664eef9..04d0a53 100644
--- a/sci-types-project/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/sciproject/ui/sciproject-description.xhtml
+++ b/sci-types-project/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/sciproject/ui/sciproject-description.xhtml
@@ -18,6 +18,18 @@
                     #{SciProjectMessageBundle.getMessage('description_step.errors.contactable_not_found', [contactableNotFound])}
                 </div>
             </c:if>
+            
+            <c:if test="#{personNotFound != null}">
+                <div class="alert alert-warning">
+                    #{SciProjectMessageBundle.getMessage('description_step.errors.person_not_found', [personNotFound])}
+                </div>
+            </c:if>
+            
+            <c:if test="#{illegalStatusValue != null}">
+                <div class="alert alert-warning">
+                    #{SciProjectMessageBundle.getMessage('description_step.errors.illegal_member_status_value', [illegalStatusValue])}
+                </div>
+            </c:if>
 
             <template id="sciproject-contacts-sort-error-general">
                 <div class="alert alert-danger mt-3" role="alert">
@@ -206,18 +218,19 @@
                 </div>
             </div>
             <librecms:assetPicker
-                actionUrl="#{mvc.basePath}/#{ContentSectionModel.sectionName}/documents/#{CmsSelectedDocumentModel.itemPath}/@sciproject-description/description/members/add"
+                actionUrl="#{mvc.basePath}/#{ContentSectionModel.sectionName}/documents/#{CmsSelectedDocumentModel.itemPath}/@sciproject-description/members/add"
                 assetPickerId="members-picker"
                 assetType="#{SciProjectDescriptionMembers.memberType}"
                 baseUrl="#{SciProjectDescriptionContacts.baseUrl}"
                 contentSection="#{ContentSectionModel.sectionName}"
-                formParamName="memberUuid">
+                dialogTitle="#{SciProjectMessageBundle['memberships.add.title']}"
+                formParamName="personUuid">
 
                 <bootstrap:formGroupText 
                     help="#{SciProjectMessageBundle['memberships.role.help']}"
                     inputId="type"
-                    label="#{SciProjectMessageBundle['contacts.role.label']}"
-                    name="type"
+                    label="#{SciProjectMessageBundle['memberships.role.label']}"
+                    name="role"
                     />
 
                 <bootstrap:formGroupSelect
@@ -271,7 +284,9 @@
                                              id="membership-edit-dialog"
                                              tabindex="-1">
                                             <div class="modal-dialog">
-                                                <form class="modal-content">
+                                                <form action="#{mvc.basePath}/#{ContentSectionModel.sectionName}/documents/#{CmsSelectedDocumentModel.itemPath}/@sciproject-description/members/edit/#{member.membershipId}"
+                                                      class="modal-content"
+                                                      method="post">
                                                     <div class="modal-header">
                                                         <h4 class="modal-title"
                                                             id="membership-edit-dialog-title">
@@ -287,17 +302,19 @@
                                                     <div class="modal-body">
                                                         <bootstrap:formGroupText 
                                                             help="#{SciProjectMessageBundle['memberships.edit.role.help']}"
-                                                            inputId="type"
+                                                            inputId="role"
                                                             label="#{SciProjectMessageBundle['memberships.edit.role.label']}"
-                                                            name="type-edit"
+                                                            name="role"
+                                                            value="#{member.role}"
                                                             />
 
                                                         <bootstrap:formGroupSelect
                                                             help="#{SciProjectMessageBundle['memberships.edit.status.help']}"
                                                             inputId="status"
                                                             label="#{SciProjectMessageBundle['memberships.edit.status.label']}"
-                                                            name="status-edit"
+                                                            name="status"
                                                             options="#{SciProjectDescriptionMembers.statusValues}"
+                                                            selectedOptions="#{[member.status]}"
                                                             />
                                                     </div>
                                                     <div class="modal-footer">
@@ -337,7 +354,6 @@
 
         <ui:define name="scripts">
             <script src="#{request.contextPath}/assets/@sciproject/sciproject-contacts.js" />
-            <!--<script src="#{request.contextPath}/assets/@content-sections/sciproject-members.js" />-->
         </ui:define>
 
     </ui:composition>
diff --git a/sci-types-project/src/main/resources/org/scientificcms/contenttypes/sciproject/ui/SciProjectBundle.properties b/sci-types-project/src/main/resources/org/scientificcms/contenttypes/sciproject/ui/SciProjectBundle.properties
index b4e7dce..217c841 100644
--- a/sci-types-project/src/main/resources/org/scientificcms/contenttypes/sciproject/ui/SciProjectBundle.properties
+++ b/sci-types-project/src/main/resources/org/scientificcms/contenttypes/sciproject/ui/SciProjectBundle.properties
@@ -178,3 +178,6 @@ contacts.order.save=Save order
 contacts.sort.errors.general=Error sorting contacts.
 contacts.sort.errors.save=Failed to save contacts order.
 contact.add.title=Add contact
+memberships.add.title=Add member
+description_step.errors.person_not_found=Selected person {0} not found.
+description_step.errors.illegal_member_status_value=The status value {0} is not valid.
diff --git a/sci-types-project/src/main/resources/org/scientificcms/contenttypes/sciproject/ui/SciProjectBundle_de.properties b/sci-types-project/src/main/resources/org/scientificcms/contenttypes/sciproject/ui/SciProjectBundle_de.properties
index c863f79..f565859 100644
--- a/sci-types-project/src/main/resources/org/scientificcms/contenttypes/sciproject/ui/SciProjectBundle_de.properties
+++ b/sci-types-project/src/main/resources/org/scientificcms/contenttypes/sciproject/ui/SciProjectBundle_de.properties
@@ -178,3 +178,6 @@ contacts.order.save=Sortierung speichern
 contacts.sort.errors.general=Fehler f\u00fcr Sortierung der Kontakte.
 contacts.sort.errors.save=Fehler beim Speichern der Sortierung der Kontakte.
 contact.add.title=Kontakt hinzuf\u00fcgen
+memberships.add.title=Mitglied hinzuf\u00fcgen
+description_step.errors.person_not_found=Die ausgew\u00e4hlte Person {0} wurde nicht gefunden.
+description_step.errors.illegal_member_status_value=Der Status {0} wird nicht unterst\u00fctzt.