I want to make multi room in game

sorry for my english.

Now. I run multiplayer by Master Server. But client don't create room in game. I want to make FPS game and client can create own room without forward port. But i can't.

conclude my question.
1.How make FPS game by client can create own room without forward port and client external network can join.
2.How to use multi scene. It same scene. But client not same see it as i have scene name X client 1 2 3 live in room 1 use scene name X and client 4 5 6 live in room 2 use scene name X in one server.

I don't want use Photon. Because it limit CCU. I have server and use less money per CCU

I don't have idea or tutorial to make it.

Could you help me. Please.

Thank you very much.

 

I would like to know it too.

 

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