Service volley must go over the net 3 times to count. Only the team serving can score points. The server must serve from the back right hand corner. The ball may not touch the net, ceiling, back wall or any two walls on the serve. However, you can use a side wall on your serve.
Serves can be overhand unless both teams agree to use underhand serves.
All players must serve in a regular rotating order. Teams shall rotate clockwise when gaining the serve. No catching, lifting or throwing of the ball over the net. No touching the net. Substitutions may be made when the ball is not in play.