Multiplayer on Catalyst simulator?

[Passionflute]

We were trying out the simulator for this year's game and we wanted to have more than one robot on the court at the same time (to try playing with an alliance or opponent), but we couldn't figure out how to get more than one computer to log in at the same time (even using the "guest" option). It just says that there is already another computer logged in on our server- which there is, but it doesn't make sense that we can't have more than one person playing at the same time. Basically, does anybody know how to play multiplayer on the simulator?