M - the left service box.
A - the right service box.
S - the left half of the singles court beyond the service line.
T - the right half of the singles court beyond the service line.
E - the left alley.
R - the right alley.
As many as 10 players can have fun and develop their volleying skills on one court if you keep them moving quickly. Have them line up at the service T, run forward a few steps, split-step, and then volley toward whichever letter is the current target. Each player must hit the targets in order, but one does not start over because of a miss. It might take several attempts to hit some targets, especially the later ones. To help you and the players keep track of where they are, if they call out the letter they're aiming for as they run forward, reward them with an extra try if they miss.
In a large group, some players will advance very quickly, while others get stuck for a while on a certain letter. To keep everyone engaged, let the players spell out the words VOLLEYER and then EXTRAORDINAIRE as needed. Just map the letters of those words onto the same sequence of target areas, so that the V in VOLLEYER is the left service box, etc.
Generally, for beginners, it makes sense to feed easy forehand volleys, but if you have some players who want more challenge, you can mix in feeds to the backhand as well.
Difficulties: This is an easy drill to run. Just make sure to have players clear any balls that hit the net so that no one will step on them.

