Queue and AFK
Full servers, maintenance and the waiting room.
Queue
If all lobbies or a mode are full, you wait in a queue. The game shows your position. /leavequeue leaves it.
Maintenance
If a mode or the network is under maintenance, the game tells you when it reopens. Before maintenance or a restart you get a warning.
AFK
If you do not move for a while, you are AFK. /afk marks you yourself. Simply standing AFK is allowed, automated play is not.
Waiting room
When it is busy, AFK players go to the waiting room. You also wait there when no lobby is free. /lobby brings you back. In the waiting room direct messages work, public chat is paused.