How to create a private chat room
Is it possible to only allow invited users to a chatroom?
No yet. Currently we're preparing "wpForo - Private Messages" addon. I think this will be the one you're looking for.
Do you have any recommendation about chat room plugin currently, which is compatible with your forum. Planning to install one .
any update on the add on for PM and advanced photo posting?
Looks like its up now... But, it also looks like it has a separate login or does that integrate with the forum I want to put it into?