I use the option file protection. In a post is a photo inserted and the contents of the article after the "More-Tag" is only for a specific group of users to read, the photo can also be see by this group, although it is in front of the "Moare-Tag". UAM is in the photo automatically restrict access to the group of Post. The field is not editable, so you can remove the check mark not by hand.
greetings - joesch