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.
Four players standing still make every ball handler's job harder. Teach V-cuts, L-cuts and back cuts so your team gets open and punishes defenders who overplay.
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.