A number of cones is placed on the court.
The cones number is one less than players number.
A player is placed next to each cone leaving one player free on the court.

The exercise starts and the players must change cones and the free player must try to get a free cone and by this sending another player out on the court.
It is not permitted to leave a cone and run back to the same cone if the cone, the player would run to, is occupied either because the player there did not run or another player has taken the cone.

If the players are "warming" the cones following rule can be applied:
All must run when the coach uses his/her whistle.
Further exercise can be applied if a player, who did not get a cone must take 3 push-ups/belly bending or something else.
During this exercise it is risk-free to change cones.