Many XMPP-only "chat" implement handle "chatroom-only" domains, such as chats.mycompany.com. These servers automatically create a chatroom when an unknown name is addressed in their domain.
CommuniGate Pro Domains contain various Objects - Accounts, Aliases, Forwarders, Mailing Lists, Groups, and others, and creating chatrooms by user request is usually not desired: the Server or Domain administrator can create chatroom Named Tasks, while regular users can create "temporary chatrooms" with unique names, used for ad-hoc chatrooms.
To allow regular users to create chatroom Named Tasks by an attempt to connect to an non-existent name in the Domain, enabled the Auto-Create Chatrooms Domain Settings. If a user of some Account in the same Domain tries to connect to a non-existent chatroom, a chatroom Named Task is created automatically, with this Account as its owner. If an attempt to connect to a non-existent chatroom is done by a user of a different CommuniGate Pro Domain or by an external user, a chatroom Named Task is created only if the target Domain has the chatmaster Account. This Account is used as the newly created Named Task owner.