Stand in a circle
Introduce idea that there is a ball of energy that the group will be passing around the circle
The ball is passed with a CLAP in the direction you want it to travel
It can be passed around the circle, change direction or across the circle
Make sure your clap is clear and pointing at someone specifically.
You can animate your clap to give it the personality you want.
Encourage the group to experiment with different tempos.
Once the group have mastered this you can add a second clap and so on.