diff --git a/module/collection/edit_collection.inc.php b/module/collection/edit_collection.inc.php
index 40439df..b30c6b2 100644
--- a/module/collection/edit_collection.inc.php
+++ b/module/collection/edit_collection.inc.php
@@ -2893,18 +2893,50 @@ function multi_select_permission($collection_id, $type){
     <script type="text/javascript" src="/plugins/jquery/jquery-3.5.1.min.js"></script>
     <script type="text/javascript" src="/plugins/Semantic-UI-master/semantic.min.js"></script>
     <link rel="stylesheet" type="text/css" href="/plugins/Semantic-UI-master/bc-semantic.css?time=<?= filemtime($_SERVER['DOCUMENT_ROOT'] . '/plugins/Semantic-UI-master/bc-semantic.css')?>">
+    <?php
+    $einrichtLinks = [];
+    if ($type == "einricht") {
+        $linkRes = mysqli_query($GLOBALS['mysql_con'],
+            "SELECT einricht_id, linked_einricht_id FROM organigramm_einricht_link");
+        while ($lr = mysqli_fetch_assoc($linkRes)) {
+            $einrichtLinks[strval($lr['einricht_id'])][] = strval($lr['linked_einricht_id']);
+        }
+    }
+    ?>
     <script>
 
         var $y = jQuery.noConflict();
         $y( document ).ready(function() {
-            $y('.websites.ui.fluid.multiple.dropdown.type_<?= $type ?>').dropdown('set selected', <?= json_encode($preselect) ?>); 
+            var $drop = $y('.websites.ui.fluid.multiple.dropdown.type_<?= $type ?>');
+            <?php if ($type == "einricht"): ?>
+            var einrichtLinks = <?= json_encode($einrichtLinks) ?>;
+            var busy = false;
+            $drop.dropdown({
+                onChange: function(value) {
+                    if (busy) return;
+                    var current = value ? value.split(',').filter(Boolean) : [];
+                    var toAdd = [];
+                    current.forEach(function(id) {
+                        (einrichtLinks[id] || []).forEach(function(lid) {
+                            if (current.indexOf(lid) < 0 && toAdd.indexOf(lid) < 0) toAdd.push(lid);
+                        });
+                    });
+                    if (toAdd.length) {
+                        busy = true;
+                        $drop.dropdown('set selected', current.concat(toAdd));
+                        busy = false;
+                    }
+                }
+            });
+            <?php endif; ?>
+            $drop.dropdown('set selected', <?= json_encode($preselect) ?>);
         });
         $("<?php echo "#all_get".$type;?>").click(function() {
-            $y('.websites.ui.fluid.multiple.dropdown.type_<?= $type ?>').dropdown('set selected', <?= json_encode($allselect) ?>); 
+            $y('.websites.ui.fluid.multiple.dropdown.type_<?= $type ?>').dropdown('set selected', <?= json_encode($allselect) ?>);
         });
         $("<?php echo "#all_del".$type;?>").click(function() {
             console.log("delete");
-            $y('.websites.ui.fluid.multiple.dropdown.type_<?= $type ?>').dropdown('clear'); 
+            $y('.websites.ui.fluid.multiple.dropdown.type_<?= $type ?>').dropdown('clear');
         });
     </script>
 <?
diff --git a/module/knowledgecenter/knowledge.inc.php b/module/knowledgecenter/knowledge.inc.php
index 9874988..eb1b874 100644
--- a/module/knowledgecenter/knowledge.inc.php
+++ b/module/knowledgecenter/knowledge.inc.php
@@ -572,18 +572,50 @@ function multi_select_permission($collection_id, $type){
     <script type="text/javascript" src="/plugins/jquery/jquery-3.5.1.min.js"></script>
     <script type="text/javascript" src="/plugins/Semantic-UI-master/semantic.min.js"></script>
     <link rel="stylesheet" type="text/css" href="/plugins/Semantic-UI-master/bc-semantic.css?time=<?= filemtime($_SERVER['DOCUMENT_ROOT'] . '/plugins/Semantic-UI-master/bc-semantic.css')?>">
+    <?php
+    $einrichtLinks = [];
+    if ($type == "einricht") {
+        $linkRes = mysqli_query($GLOBALS['mysql_con'],
+            "SELECT einricht_id, linked_einricht_id FROM organigramm_einricht_link");
+        while ($lr = mysqli_fetch_assoc($linkRes)) {
+            $einrichtLinks[strval($lr['einricht_id'])][] = strval($lr['linked_einricht_id']);
+        }
+    }
+    ?>
     <script>
 
         var $y = jQuery.noConflict();
         $y( document ).ready(function() {
-            $y('.websites.ui.fluid.multiple.dropdown.type_<?= $type ?>').dropdown('set selected', <?= json_encode($preselect) ?>); 
+            var $drop = $y('.websites.ui.fluid.multiple.dropdown.type_<?= $type ?>');
+            <?php if ($type == "einricht"): ?>
+            var einrichtLinks = <?= json_encode($einrichtLinks) ?>;
+            var busy = false;
+            $drop.dropdown({
+                onChange: function(value) {
+                    if (busy) return;
+                    var current = value ? value.split(',').filter(Boolean) : [];
+                    var toAdd = [];
+                    current.forEach(function(id) {
+                        (einrichtLinks[id] || []).forEach(function(lid) {
+                            if (current.indexOf(lid) < 0 && toAdd.indexOf(lid) < 0) toAdd.push(lid);
+                        });
+                    });
+                    if (toAdd.length) {
+                        busy = true;
+                        $drop.dropdown('set selected', current.concat(toAdd));
+                        busy = false;
+                    }
+                }
+            });
+            <?php endif; ?>
+            $drop.dropdown('set selected', <?= json_encode($preselect) ?>);
         });
         $("<?php echo "#all_get".$type;?>").click(function() {
-            $y('.websites.ui.fluid.multiple.dropdown.type_<?= $type ?>').dropdown('set selected', <?= json_encode($allselect) ?>); 
+            $y('.websites.ui.fluid.multiple.dropdown.type_<?= $type ?>').dropdown('set selected', <?= json_encode($allselect) ?>);
         });
         $("<?php echo "#all_del".$type;?>").click(function() {
             console.log("delete");
-            $y('.websites.ui.fluid.multiple.dropdown.type_<?= $type ?>').dropdown('clear'); 
+            $y('.websites.ui.fluid.multiple.dropdown.type_<?= $type ?>').dropdown('clear');
         });
     </script>
 <?
diff --git a/module/knowledgecenter_update/Views/categories_cardform.php b/module/knowledgecenter_update/Views/categories_cardform.php
index 25b408a..794118c 100644
--- a/module/knowledgecenter_update/Views/categories_cardform.php
+++ b/module/knowledgecenter_update/Views/categories_cardform.php
@@ -134,6 +134,13 @@ while ($row = mysqli_fetch_assoc($resultSavedEinrichts)) {
     $savedEinrichts[] = $row['einricht_id'];
 }
 
+// Verknüpfungskarte für Einrichtungen (Gruppen → Mitglieder)
+$einrichtLinks = [];
+$linkRes = mysqli_query($GLOBALS['mysql_con'], "SELECT einricht_id, linked_einricht_id FROM organigramm_einricht_link");
+while ($lr = mysqli_fetch_assoc($linkRes)) {
+    $einrichtLinks[strval($lr['einricht_id'])][] = strval($lr['linked_einricht_id']);
+}
+
 // Array mit Daten für Tagify (Einrichtungen)
 $savedEinrichtsData = [];
 foreach ($einrichts as $einricht) {
@@ -842,6 +849,17 @@ $parentCount = count($parentCategories);
             }
         }
     });
+    var einrichtLinks = <?= json_encode($einrichtLinks) ?>;
+    tagifyEinrichts.on('add', function(e) {
+        var addedId = String(e.detail.data.value);
+        (einrichtLinks[addedId] || []).forEach(function(lid) {
+            var exists = tagifyEinrichts.value.some(function(t) { return String(t.value) === lid; });
+            if (!exists) {
+                var item = einrichtsData.find(function(d) { return String(d.value) === lid; });
+                if (item) tagifyEinrichts.addTags([item]);
+            }
+        });
+    });
 
     var tagifyFachbereiche = new Tagify(document.getElementById('selected_fachbereiche'), {
         whitelist: fachbereicheData,
diff --git a/module/knowledgecenter_update/Views/post_cardform_settings.php b/module/knowledgecenter_update/Views/post_cardform_settings.php
index dc475be..305a207 100644
--- a/module/knowledgecenter_update/Views/post_cardform_settings.php
+++ b/module/knowledgecenter_update/Views/post_cardform_settings.php
@@ -136,6 +136,13 @@ $result = mysqli_query($GLOBALS['mysql_con'], $query);
 while ($row = mysqli_fetch_assoc($result)) {
     $postEinrichtsData[] = ['value' => $row['id'], 'name' => $row['description']];
 }
+
+// Verknüpfungskarte für Einrichtungen (Gruppen → Mitglieder)
+$postEinrichtLinks = [];
+$linkRes = mysqli_query($GLOBALS['mysql_con'], "SELECT einricht_id, linked_einricht_id FROM organigramm_einricht_link");
+while ($lr = mysqli_fetch_assoc($linkRes)) {
+    $postEinrichtLinks[strval($lr['einricht_id'])][] = strval($lr['linked_einricht_id']);
+}
 $selectedPostEinrichts = [];
 if ($postId != 0) {
     $querySelected = "SELECT e.id, e.description
@@ -409,6 +416,17 @@ if (!empty($post['text_color'])) {
     if (selectedPostEinrichts.length) {
         tagifyPostEinrichts.addTags(selectedPostEinrichts);
     }
+    var postEinrichtLinks = <?= json_encode($postEinrichtLinks) ?>;
+    tagifyPostEinrichts.on('add', function(e) {
+        var addedId = String(e.detail.data.value);
+        (postEinrichtLinks[addedId] || []).forEach(function(lid) {
+            var exists = tagifyPostEinrichts.value.some(function(t) { return String(t.value) === lid; });
+            if (!exists) {
+                var item = postEinrichtsData.find(function(d) { return String(d.value) === lid; });
+                if (item) tagifyPostEinrichts.addTags([item]);
+            }
+        });
+    });
 
     // Fachbereiche für Post
     var tagifyPostFachbereiche = new Tagify(document.getElementById('postFachbereichTags'), {
diff --git a/mysyde/admin/edit_main_navigation.inc.php b/mysyde/admin/edit_main_navigation.inc.php
index bb9f778..f0868f4 100644
--- a/mysyde/admin/edit_main_navigation.inc.php
+++ b/mysyde/admin/edit_main_navigation.inc.php
@@ -747,13 +747,45 @@ function multi_select_permission($navigation_id, $type){
     <script type="text/javascript" src="/plugins/jquery/jquery-3.5.1.min.js"></script>
     <script type="text/javascript" src="/plugins/Semantic-UI-master/semantic.min.js"></script>
     <link rel="stylesheet" type="text/css" href="/plugins/Semantic-UI-master/bc-semantic.css?time=<?= filemtime($_SERVER['DOCUMENT_ROOT'] . '/plugins/Semantic-UI-master/bc-semantic.css')?>">
+    <?php
+    $einrichtLinks = [];
+    if ($type == "einricht") {
+        $linkRes = mysqli_query($GLOBALS['mysql_con'],
+            "SELECT einricht_id, linked_einricht_id FROM organigramm_einricht_link");
+        while ($lr = mysqli_fetch_assoc($linkRes)) {
+            $einrichtLinks[strval($lr['einricht_id'])][] = strval($lr['linked_einricht_id']);
+        }
+    }
+    ?>
     <script>
         var $y = jQuery.noConflict();
         $y( document ).ready(function() {
-            $y('.websites.ui.fluid.multiple.dropdown.type_<?= $type ?>').dropdown('set selected', <?= json_encode($preselect) ?>); 
+            var $drop = $y('.websites.ui.fluid.multiple.dropdown.type_<?= $type ?>');
+            <?php if ($type == "einricht"): ?>
+            var einrichtLinks = <?= json_encode($einrichtLinks) ?>;
+            var busy = false;
+            $drop.dropdown({
+                onChange: function(value) {
+                    if (busy) return;
+                    var current = value ? value.split(',').filter(Boolean) : [];
+                    var toAdd = [];
+                    current.forEach(function(id) {
+                        (einrichtLinks[id] || []).forEach(function(lid) {
+                            if (current.indexOf(lid) < 0 && toAdd.indexOf(lid) < 0) toAdd.push(lid);
+                        });
+                    });
+                    if (toAdd.length) {
+                        busy = true;
+                        $drop.dropdown('set selected', current.concat(toAdd));
+                        busy = false;
+                    }
+                }
+            });
+            <?php endif; ?>
+            $drop.dropdown('set selected', <?= json_encode($preselect) ?>);
         });
         $("<?php echo "#all_".$type;?>").click(function() {
-            $y('.websites.ui.fluid.multiple.dropdown.type_<?= $type ?>').dropdown('set selected', <?= json_encode($allselect) ?>); 
+            $y('.websites.ui.fluid.multiple.dropdown.type_<?= $type ?>').dropdown('set selected', <?= json_encode($allselect) ?>);
         });
     </script>
 <?