diff --git a/sci-publications/src/main/java/org/scientificcms/publications/ProceedingsManager.java b/sci-publications/src/main/java/org/scientificcms/publications/ProceedingsManager.java
index 9abafa2..f55aabd 100644
--- a/sci-publications/src/main/java/org/scientificcms/publications/ProceedingsManager.java
+++ b/sci-publications/src/main/java/org/scientificcms/publications/ProceedingsManager.java
@@ -28,7 +28,7 @@ public class ProceedingsManager {
     @AuthorizationRequired
     @RequiresPrivilege(ItemPrivileges.EDIT)
     @Transactional(Transactional.TxType.REQUIRED)
-    public void addPaperToCollectedVolume(final InProceedings paper,
+    public void addPaperToProceedings(final InProceedings paper,
                                           final Proceedings proceedings) {
         Objects.requireNonNull(paper);
         Objects.requireNonNull(proceedings);
@@ -43,7 +43,7 @@ public class ProceedingsManager {
     @AuthorizationRequired
     @RequiresPrivilege(ItemPrivileges.EDIT)
     @Transactional(Transactional.TxType.REQUIRED)
-    public void removeArticleFromCollectedVolume(
+    public void removeArticleFromProceedings(
         final InProceedings paper,
         final Proceedings collectedVolume
     ) {
diff --git a/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/ProceedingsPropertiesStep.java b/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/ProceedingsPropertiesStep.java
index 73f6f97..c4c3179 100644
--- a/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/ProceedingsPropertiesStep.java
+++ b/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/ProceedingsPropertiesStep.java
@@ -1,11 +1,15 @@
 package org.scientificcms.publications.ui.contenttypes;
 
-import freemarker.template.utility.DateUtil;
+import org.libreccm.api.Identifier;
 import org.libreccm.api.IdentifierParser;
 import org.libreccm.l10n.GlobalizationHelper;
 import org.libreccm.security.AuthorizationRequired;
+import org.librecms.assets.Organization;
+import org.librecms.contentsection.Asset;
+import org.librecms.contentsection.AssetRepository;
 import org.librecms.ui.contentsections.ContentSectionNotFoundException;
 import org.librecms.ui.contentsections.ItemPermissionChecker;
+import org.librecms.ui.contentsections.assets.OrganizationEditStep;
 import org.librecms.ui.contentsections.documents.DocumentNotFoundException;
 import org.librecms.ui.contentsections.documents.DocumentUi;
 import org.librecms.ui.contentsections.documents.MvcAuthoringStepDef;
@@ -14,6 +18,7 @@ import org.scientificcms.publications.InProceedings;
 import org.scientificcms.publications.Proceedings;
 import org.scientificcms.publications.ProceedingsManager;
 import org.scientificcms.publications.PublicationRepository;
+import org.scientificcms.publications.assets.PublisherAsset;
 import org.scientificcms.publications.contenttypes.ProceedingsItem;
 import org.scientificcms.publications.ui.SciPublicationsUiConstants;
 import org.scientificcms.publications.ui.SciPublicationsUiMessageBundle;
@@ -22,6 +27,7 @@ import java.time.LocalDate;
 import java.time.ZoneId;
 import java.time.format.DateTimeFormatter;
 import java.time.format.DateTimeParseException;
+import java.util.Objects;
 import java.util.Optional;
 import java.util.stream.Collectors;
 
@@ -59,6 +65,9 @@ public class ProceedingsPropertiesStep
     public static final String EDIT_STEP_URL_FRAGMENT
         = "proceedings-basicproperties";
 
+    @Inject
+    private AssetRepository assetRepo;
+
     @Inject
     private DocumentUi documentUi;
 
@@ -472,7 +481,59 @@ public class ProceedingsPropertiesStep
         @FormParam("paperIdentifier")
         final String paperIdentifier
     ) {
-        throw new UnsupportedOperationException();
+        try {
+            init();
+        } catch (ContentSectionNotFoundException ex) {
+            return ex.showErrorMessage();
+        } catch (DocumentNotFoundException ex) {
+            return ex.showErrorMessage();
+        }
+
+        if (itemPermissionChecker.canEditItem(getDocument())) {
+            final Identifier identifier = identifierParser.parseIdentifier(
+                paperIdentifier
+            );
+            final Optional<InProceedings> paperResult;
+            switch (identifier.getType()) {
+                case ID:
+                    paperResult = publicationRepo.findByIdAndType(
+                        Long.parseLong(identifier.getIdentifier()),
+                        InProceedings.class
+                    );
+                    break;
+                case UUID:
+                    paperResult = publicationRepo.findByUuidAndType(
+                        identifier.getIdentifier(),
+                        InProceedings.class
+                    );
+                    break;
+                default:
+                    paperResult = Optional.empty();
+                    break;
+            }
+
+            if (paperResult.isEmpty()) {
+                return showPaperNotFound(
+                    sectionIdentifier,
+                    documentPath,
+                    paperIdentifier
+                );
+            }
+
+            final InProceedings paper = paperResult.get();
+            proceedingsManager.addPaperToProceedings(
+                paper,
+                getPublication()
+            );
+
+            return buildRedirectPathForStep();
+        } else {
+            return documentUi.showAccessDenied(
+                getContentSection(),
+                getDocument(),
+                getLabel()
+            );
+        }
     }
 
     @POST
@@ -487,7 +548,43 @@ public class ProceedingsPropertiesStep
         @PathParam("paperUuid")
         final String paperUuid
     ) {
-        throw new UnsupportedOperationException();
+        try {
+            init();
+        } catch (ContentSectionNotFoundException ex) {
+            return ex.showErrorMessage();
+        } catch (DocumentNotFoundException ex) {
+            return ex.showErrorMessage();
+        }
+
+        if (itemPermissionChecker.canEditItem(getDocument())) {
+            final Optional<InProceedings> paperResult = getPublication()
+                .getPapers()
+                .stream()
+                .filter(paper -> Objects.equals(paper.getUuid(), paperUuid))
+                .findAny();
+
+            if (paperResult.isEmpty()) {
+                return showPaperNotPartOfProceedings(
+                    sectionIdentifier,
+                    documentPath,
+                    sectionIdentifier
+                );
+            }
+
+            final InProceedings paper = paperResult.get();
+            proceedingsManager.removeArticleFromProceedings(
+                paper,
+                getPublication()
+            );
+
+            return buildRedirectPathForStep();
+        } else {
+            return documentUi.showAccessDenied(
+                getContentSection(),
+                getDocument(),
+                getLabel()
+            );
+        }
     }
 
     @POST
@@ -502,7 +599,69 @@ public class ProceedingsPropertiesStep
         @FormParam("organizerIdentifier")
         final String organizerIdentifier
     ) {
-        throw new UnsupportedOperationException();
+        try {
+            init();
+        } catch (ContentSectionNotFoundException ex) {
+            return ex.showErrorMessage();
+        } catch (DocumentNotFoundException ex) {
+            return ex.showErrorMessage();
+        }
+
+        if (itemPermissionChecker.canEditItem(getDocument())) {
+            final Identifier identifier = identifierParser.parseIdentifier(
+                organizerIdentifier
+            );
+            final Optional<Organization> organizationResult;
+            switch (identifier.getType()) {
+                case ID:
+                    organizationResult = assetRepo.findById(
+                        Long.parseLong(identifier.getIdentifier()),
+                        Organization.class
+                    );
+                    break;
+                case UUID:
+                    organizationResult = assetRepo.findByUuidAndType(
+                        identifier.getIdentifier(),
+                        Organization.class
+                    );
+                    break;
+                default:
+                    final Optional<Asset> result = assetRepo.findByPath(
+                        identifier.getIdentifier()
+                    );
+                    if (result == null || result.isEmpty()) {
+                        organizationResult = Optional.empty();
+                    } else if (!(result.get() instanceof Organization)) {
+                        organizationResult = Optional.empty();
+                    } else {
+                        organizationResult = Optional.of(
+                            (Organization) result.get()
+                        );
+                    }
+                    break;
+            }
+
+            if (organizationResult.isEmpty()) {
+                return showOrganizerNotFound(
+                    sectionIdentifier,
+                    documentPath,
+                    organizerIdentifier
+                );
+            }
+
+            final Organization organization = organizationResult.get();
+
+            getPublication().setOrganizer(organization);
+            publicationRepo.save(getPublication());
+
+            return buildRedirectPathForStep();
+        } else {
+            return documentUi.showAccessDenied(
+                getContentSection(),
+                getDocument(),
+                getLabel()
+            );
+        }
     }
 
     @POST
@@ -515,7 +674,26 @@ public class ProceedingsPropertiesStep
         @PathParam(MvcAuthoringSteps.DOCUMENT_PATH_PATH_PARAM_NAME)
         final String documentPath
     ) {
-        throw new UnsupportedOperationException();
+        try {
+            init();
+        } catch (ContentSectionNotFoundException ex) {
+            return ex.showErrorMessage();
+        } catch (DocumentNotFoundException ex) {
+            return ex.showErrorMessage();
+        }
+
+        if (itemPermissionChecker.canEditItem(getDocument())) {
+            getPublication().setOrganizer(null);
+            publicationRepo.save(getPublication());
+            
+            return buildRedirectPathForStep();
+        } else {
+            return documentUi.showAccessDenied(
+                getContentSection(),
+                getDocument(),
+                getLabel()
+            );
+        }
     }
 
     private String showInvalidStartDate(
@@ -552,4 +730,31 @@ public class ProceedingsPropertiesStep
         return row;
     }
 
+    private String showPaperNotFound(
+        final String sectionIdentifier,
+        final String documentPath,
+        final String paperIdentifier
+    ) {
+        models.put("paperNotFound", paperIdentifier);
+        return showStep(sectionIdentifier, documentPath);
+    }
+
+    private String showPaperNotPartOfProceedings(
+        final String sectionIdentifier,
+        final String documentPath,
+        final String paperIdentifier
+    ) {
+        models.put("paperNotPartOfProceedings", paperIdentifier);
+        return showStep(sectionIdentifier, documentPath);
+    }
+
+    private String showOrganizerNotFound(
+        final String sectionIdentifier,
+        final String documentPath,
+        final String organizierIdentifier
+    ) {
+        models.put("organizerNotFound", organizierIdentifier);
+        return super.showStep(sectionIdentifier, documentPath);
+    }
+
 }