Really simple idea, set your group out in the desired shape.
We will take the old school 442 as an example, ball begins at right back and pass is made to DC then across to the other DC and so on. When passing the player must take the position of where he is passing to, so right back passes to centre half, he take centre half so on each occasion you follow your pass.
The idea is to encourage an understanding of the structure and shape of the team, and idea of where everyone will be. Really simple but surprisingly effective.