Questions regarding multiplayer lobbies

Hello, I’m new to Gdevelop and before embarking on the project I’d like to know how feasible are some of the potential use cases in the multiplayer mode.

For example, can I allow only certain players to enter certain lobbies?

For instance, I see on the website it shows that you can create a button called join lobby which will take you to the open lobbies section, which to me are more so rooms inside of a lobby per say.

Can I have different instances of the lobbies , where one is say Lobby A - with a set of 5 lobbies/rooms inside of it, another called Lobby B - and again have a separate set of 5 lobbies/rooms inside of it?

If so, is is possible to program it so only certain users can go in lobby A while others in lobby B?