how?
 

How do you get to the chat room of your choice? It says there are 7 ppl in different rooms but once I get to the lounge I don't know what to do.

There are small icons in the upper portion, across from the word Lobby.
Hover over them to see the name -the little doorway w/arrow is the one to click to change rooms.
I had trouble "finding " it too when I went there the first time. :)