Use the acc command to find out what access level you or another user has to a registered room.
ChanServ will return one of the following values:
7 Identified as founder of the room by the room's password.
6 Identified to the founder's nick.
5 Matches an entry in the access list of the founder's nick.
0 Normal User
-1 AKICKed user
/msg chanserv acc #conferenceroom joeuser