Set players up as shown in video clip.
The baseline offensive player will drive towards the basket.
The help defender will come over and stop the drive.
The player with the ball will pass to the other offensive player. The receiver of the pass will shoot the ball.
The defensive player will sprint out and challenge the shot.
The drill ends when the players box out and get the rebound.
Good team defence is five players guarding the ball, not five separate one-on-ones. The shell drill is where that starts, so here is how to teach help-side positioning and rotations from the first week of the season.
Rebounding is the least glamorous thing in basketball and one of the most decisive. It is also almost entirely a habit, which means it is entirely coachable.
Good spacing is only the start. The best modern offences teach players to attack the defence's rotations and play in a permanent 4-on-3 - here is how to coach that read.