P1 is in triple threat position.
P2 & P3 make a V-cut run looking to receive the pass from P1.
P1 can pass to either side. After passing P1 looks to receive the pass back after making a V-cut run and then shoots a lay-up.
P2 & P3 follow up for the rebound and then all rotate one spot anti so that the drill continues.
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.
The ball screen produces almost half of all professional offensive possessions, yet most teams still teach it as a memorised play. The modern approach trains the read - giving players a framework to decide based on what the defence does, not what the coach called.