Sorry, I've got no experience with multiplayer support.. I was just trying to keep your thread active and maybe clarify your needs to encourage someone more knowledgeable to answer.
The only think I can think of in my complete lack of knowledge of the subject is to actually have all your levels actually built in one frame, and then you could teleport your respective players to the different locations within the same frame to create the illusion that they are in different levels. Make sense?
Best of luck.
Thank you Mike, i figured it out,
just use the instance and room global variables,,we can make peole in different layouts. i think its pretty cool.
but i met another problem, if host go to another layout, all get kicked, my solution is add acction on the "on kicked" condition.