System servers in start place

Hello everyone in this thread, I would like to ask how to make such a system look like a lobby, let’s get started! I would like to ask how to make it so that when the player enters the starting place and the button appears in the GUI menu, connect to your server
The fact is that the server was created when the player entered the server
How can I do this I can’t understand

I think this is the wrong category for that question

And how wrong category? For this question (sorry for my eng i belarussian)

oh Wait I though you asked how you should big system servers in start place aka building

I think u thinj true i eant servers system in start place