U can create a keys with "group present" to join or leave the group
Sorry sunspark i forgot to add that the users are working remotely and are connected via external hotdesking/personal ring groups to the ring group. They can dial a number with a FAC to log themselves in remotely via their mobile to their personal ring group and then make themselves available in the ring group in which they participate, but they can not see their present/absent status in their personal ring group/ring group.
Is there a way?
As far as i can tell, i can not give a user viewing rights into the PBX without them having extra options to cause damage to the system.
I also can not find a maintenance command that displays presence, and i wouldn't even know how to address this command via an API (if it even exists).