How to choce from two Players (online game)

Hi to everyone!
So i must build online game with two different players one is Helicopter and another is shooter. How can i spawn a player in the game by choosing on them after the server is started. I think a have to have two buttons (Helicopter button) and (Shutter button) I put the game somewhere on the host and if i am the first player ( i can see to buttons (Helicopter button) and (Shooter button) after server started. As a first player i must choose between (helicopter/shooter) for...

How to choce from two Players (online game)