Index: lams_central/web/includes/javascript/authoring/authoringGeneral.js
===================================================================
diff -u -r8eb17552bb0f8d754f5d9aff2d974d83e2d9e59f -r17902f150cd4e5adee3f6c8f555ebdc9a8ef0133
--- lams_central/web/includes/javascript/authoring/authoringGeneral.js	(.../authoringGeneral.js)	(revision 8eb17552bb0f8d754f5d9aff2d974d83e2d9e59f)
+++ lams_central/web/includes/javascript/authoring/authoringGeneral.js	(.../authoringGeneral.js)	(revision 17902f150cd4e5adee3f6c8f555ebdc9a8ef0133)
@@ -2362,7 +2362,10 @@
 				
 				// if it is a support activity, grouping does not need to be connected with it
 				// it just needs to exist
-				if (coreActivity.parentActivity instanceof ActivityDefs.FloatingActivity) {
+				if (coreActivity.parentActivity && 
+					 (coreActivity.parentActivity instanceof ActivityDefs.FloatingActivity 
+				     || coreActivity.parentActivity.parentActivity instanceof ActivityDefs.FloatingActivity)) {
+					// above: parent of parent check is because a parallel activity can be a support activity
 					if (!coreActivity.grouping) {
 						return true;
 					}