Strike it clean on the half-volley. Judge the bounce, get your body over the ball, and hit through the top of it to keep it down into the corner.
A feeder lofts a bouncing ball and the striker hits it on the half-volley. Emphasise judging the bounce, getting the body over the ball, and a clean contact through the top to keep it down. Vary the service. Rotate players.
Fork it into your private drills, then change the animation, adjust positions, swap equipment, or drop it into a session block.