This is the 2nd step to teaching a lay up.
From the right side (as in the example) player takes one step forward with their left foot and then drives the right knee up (as if their elbow and knee were attached with a piece of string) to finish the lay up they aim for the little black square on the backboard, as in step one.
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.