This is a complex attack-drill starting out with a hand-off or P&R. The idea is to do it as a shooting drill where you work out with a team-mate and do 5-10 reps before changing.

A problem is often that a guard attacks to deep without stretching the defense out when they switch on a hand-off or P&R. With a retreat dribble the guard can find a good angle to feed to forward diving in the lane.