How can i use PUN Turn manager? (Urgent)

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Hi friends, I'm on a game project and I've made a lot of progress. The game is running with poker logic. As in the poker game, players will come round one by one. But I don't know how to do that! I start the tour with the BeginTurn () command, but what do I do next? You can share my codes if you wish. But how do I switch from one user to another? How do I tell the server you've completed your turn? With which function? Thanks in advance!
Good codings !.