full plugin mod for multiselection

application/modules/admin/controllers/ExternalAgendasController.php

@@ -21,6 +21,11 @@
 
 
 class Admin_ExternalAgendasController extends ZendAfi_Controller_Action {
+  public function getPlugins() {
+    return ['ZendAfi_Controller_Plugin_Manager_Manager'];
+  }
+
+
   public function getRessourceDefinitions() {
     return
       [