Play starts with an underhanded toss to the opponent. You may not "serve to win". The purpose of the serve is to put the ball in play.
Once served, the ball is allowed to bounce once on the other side at any time during the series.
The receiving team is allowed to play the ball up to three times before their return. However, one player may not touch the ball twice in a row. (Just like real volleyball)
Play continues until the ball lands outside of the grid or it touches the ground more than once.
The game is scored like volleyball with teams only scoring points on their own serve.
Receiving technique, volleys, heading.
Players must work together.
For players whose skills are not that developed, allow the ball to bounce once after each touch is made.
Allow 2 points for a winner made with the head.
Demand that both players must touch the ball before it goes back over the net.