Just log in. If it doesn't work, for example, the arrows aren't working, then reload. The server is either broken or the room is full.
I am super exited about this. I can make multi-player rooms now! With a bit of modifications, this could be multi-player games! I feel like my account is coming into a new phase, a time where people can play each other! Just so you know, leave multi means that it reverts you to default position, which is required for the project to run. If you break it, I will be very unhappy, and so will other people.
