Two passers, setter, two hitters on offensive side. Two tossers and three blockers on other side.
Ball is entered by tosser to one of two passers. Passer passes to setter who alternates sets between two hitters.
Hitters drive a ball or roll / tip to donut. If ball lands in designated zones, hitter scores.
Drill is over when one hitter wins.
Switch out hitters, blockers, passers, tossers, etc.
Winning criteria - varies.
First to 5. Game to five win by 2. Hit into net can reset to zero in some cases. Limit number of available zones. Etc.
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.