Fixes #12488 - Add admin flag to usergroup param description
(cherry picked from commit 7f8a818e5f46dbfcb97604d9036c7c4818ab063f)
Fixes #12488 - Add admin flag to usergroup param description
(cherry picked from commit 7f8a818e5f46dbfcb97604d9036c7c4818ab063f)