diff --git a/src/applications/conpherence/controller/ConpherenceUpdateController b/src/applications/conpherence/controller/ConpherenceUpdateController
--- a/src/applications/conpherence/controller/ConpherenceUpdateController
+++ b/src/applications/conpherence/controller/ConpherenceUpdateController
@@ -209,14 +209,19 @@
         ->setDatasource(new PhabricatorPeopleDatasource()));

     require_celerity_resource('conpherence-update-css');
-    return id(new AphrontDialogView())
+    $view = id(new AphrontDialogView())
       ->setTitle(pht('Add Participants'))
       ->addHiddenInput('action', 'add_person')
       ->addHiddenInput(
         'latest_transaction_id',
         $request->getInt('latest_transaction_id'))
       ->appendChild($form);
+
+    if ($request->getExists('minimal_display')) {
+      $view->addHiddenInput('minimal_display', true);
     }
+    return $view;
+  }

   private function renderRemovePersonDialogue(
     ConpherenceThread $conpherence) {