Volleyball Drill Demonstration
One server stands behind the opponent's baseline and two setters stand in Zone 2 and 3. The receiver is supposed to underhand pass the served ball to the setters alternately.
Every four passes rotate players so they become servers, setters and receivers. In this drill, receivers must keep low position and control ball direction.
You may set 2 servers so they would serve one after the other like a 'machine gun', giving receiver little time to prepare and react.