Place the players into the 4-3-3 formation.
Poles or mannequins are placed to draw the passing channels and stimulate the defenders' positions.
14-18 players must take part in the exercise about the optimal execution.
One of the coaches or a goalkeeper, as server stands with balls in front of the penalty box. 
Three variations can be seen.

This soccer tactic exercise includes different combinations and supporting movements in the right rhythm.
Because this is a complex soccer drill with determined movements and passing channels, it demands strong concentration so it's important that the players perform the soccer drill with slow intensity at first.
In case the players' abilities require, they can receive the ball instead of one-touch play but they must harmonize the supporting movements and runs to the situations.
Since the players implement the combinations, build up the attacks and finish the actions in the middle, the server always passes a second ball to the full back joining into the attack, who centers the ball, and the players in the box try to score.
The server has to pass the ball in the right moment, approximately at the time of shooting.