A global chat room with ALL the users inside by default using the core chat ?

[faizanzahid]

I really love the shoutbox plugin, however since it is not compaitble with the latest version of node bb.

I was thinking how can we add ALL the forum users in a sort of Global Chat Room (a chat room made from the private chat) which only admins can make such a room.
This room will serve like a public chat room/shoutbox for ALL THE FORUM users.

How can we achieve this? Doing this will allow us to have all the amazing features the chat front is being worked on such as sending images etc.

@julian