In indoor, you stay on one side of the net for the entire set, then switch to the other side after every set is done until the match is complete. If you go to a fifth set, a meeting between captains or coaches takes place where the refs will flip a coin to see who has the choice between side, serve or receive. Players switch sides of the net after the score adds up to 15. In beach, you switch sides of the net every 7 points. So if the score is 5-2, you switch, 7-7, switch, 13-15, switch. If you go to a third set, you will switch every 5 points until the match has been won.