2 players will attack 1 defender. After a shot has been taken all 3 players become offence and 2 defenders will run in to play a 3v2 at the other end.
Once a shot has been taken at that end. The 2 defenders become offence and 1 defender will run in at the other end.
This is a continuous drill, where each end the same thing will happen each time.
Make sure players on the wings run wide, so that the have a good angle to attack once they receive the ball.
2-3 passes should be the maximum number of passes to get a good shot in this drill. Remember in a real game you will have 4 or 3 more defenders running back on defence as well.
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.