Whenever your team wins a point on the other team's serve, your team gets to serve again. Before your team serves, it rotates in a clockwise direction: right back, the server, becomes middle back; right front becomes right back, now the server; middle front becomes right front; left front becomes middle front; left back becomes left front; and middle back becomes left back. Your team won't rotate again until there is another side-out, if your team again wins a point on the other team's serve.
A rotation occurs after every sideout, which is when the receiving team gains the right to serve by winning a rally. ... The new serving team will rotate clockwise one spot. The purpose of this is to rotate all the players through the serving position. If you continue winning points, you stay in position
