A 6-2 volleyball offense means that their are 6 hitters and 2 setters. But wait, I thought there were only 6 players on the court? The 2 setters also act as hitters, so that is why it doesn't add up.
In a 6-2, there is always one setter in the front row and one setter in the back row. The one in the back row will always be the true setter. Every play the setter in the back row moves to the front row to create a front row of 3 hitters and 1 setter and a back row of 2 hitters.
Recall that only those in the front row can jump past the attack line. This strategy is designed to ensure that there are always 3 hitters (that can jump past the attack line) in the front row.
Set your front and back row making sure that there is 1 setter in the front row, and 1 in the back. They can start in any position, however it is crucial that they are 3 positions away from each other. For example if setter A is in the serving position, setter B should be in the front left.
If they are not 3 positions away from each other, eventually you will end up with 2 setters in the same row, which completely defeats the purpose of the 6-2 formation.
BACK ROW SETTER
After starting in the proper position, the back row setter moves to the front row immediately after the other team serves. The setter should go just a few feet off the center of the net to the side that the middle hitter swings with. For example if the middle hitter is right-handed, as is often the case, the back row setter should line up between the middle hitter and the opposite-side hitter.
Note: To reduce the distance and time it takes for the setter to get to the front row, the setter should be lined up as close as possible to the front row, without being out of position. Often this means moving the front row player that is in front of the setter right up to the net.
Note: It is important that the setters and players know where their original position is. During the play, players will be all over the place, but prior to each serve, they must get back to their proper position.
Note: Even though the back row setter is positioned in the front row during the play, he/she is not allowed to jump at the net (since he/she came from the back row).
FRONT ROW SETTER (HITTER)
When a setter starts the play in the front row, they are considered a hitter. They should let the second ball go to the other setter, and focus instead on spiking and blocking. Unlike the back row setter, this player can jump at the net.
A 6-2 is a highly effective offensive strategy that can be particularly effective with 2 comparable setters that can hit. Also, a 6-2 is most effective with a good-passing team, as the back row setter can not jump at the net, and may not have as much range as in other formations.