Players line up in 5 positions
The players at the baseline start with the ball.
Player pass it around until it gets to the last man.
Last man shoots, then rebounds own ball then becomes the inbounder
All players advance after pass.
Make sure players are in good position to catch the ball & swing to next man.
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.