An early christmas gift for George again :-)

The current add rule action quickly don't fit... as soon as number of users & groups increase.
The point is :
1 - make it an action (div class="action_bar"><ul><li>...)
2 - make it a 2 steps screen with <div class="infoMessage"> comment.
3 - user/groups selection would be similar to users & groups tables & filter behaviour as described in NXP-285. Users and groups are mixed in the table (see NXP-305 too)

Here are 3 screenshots that explains everything.

Later on, we could think of adding several rules for the selected users & groups.