Put the players in groups of 3.
The players on the outside receive the ball and pass it back to the player in the middle.
The player in the middle receives the ball and turns to pass the ball on to the player on the opposite side.
In this practice the player receives the ball with the none kicking foot, and turns to pass the ball on to the other player.This is to speed up the transfer.
New hitters rarely miss because of their arm. They miss because of their feet. Build a reliable approach, then time it with your setter.
When your hitter gets stuffed, five teammates standing and watching is how you lose the point. Good attack coverage turns a blocked ball into a second swing.
Coaches spend hours correcting arms in serve receive when the real fault is almost always the feet. Fix the movement and the platform fixes itself.