Ok, after some digging, here is what I have found. Please confirm this when you can.
1. My program adds a row to CuteChatLobby, IsPublic = false, IsEnable = true, IsHidden = true, AllowAnonymous = false, ManagerList = '1,2' where the list values are the userid numbers from the CuteChatUser table, comma separated.
2. The missing info was the ManagerList field, described in item 1 above.
3. The url should be something list this: http://localhost/Chat/CuteSoft_Client/CuteChat/CH_MainForm.Aspx?Location=Lobby&LocationId=3
Hope this is correct and is helpful to others...
Pete