Each group needs a 5m square setup. (A, B & C) occupy 3 of the 4 cones, defender (D) starts in the middle.
The key concept is for the two players without the ball to provide options at the cones on either side of the player with the ball.
(A, B & C) move to the spare cones to create a passing option. Players may pass left or right around the square, but not diagonally across it.
Rotate defender after 45 seconds; repeat until all players have a turn defending.