Apple Motion 2 Tutorials - Manual (Page 202)

202 Tutorial 4 Working With Particles
The particles all spin in different directions. In the Inspector, the Behaviors tab is
automatically selected, and the Apply To field is set to Object.Spin.
2 Set Amplitude to 150.
The Amplitude controls how far back and forth the angle of Spin changes. Setting it to
150 means the smallest Spin value is -150 and the largest Spin value is 150.
3 Set Speed to 50.
The particles change the direction of their spin faster.
Now the particles spin at different rates, and in different directions. To access the
Oscillate parameters again, you must select the 5-sided star particle cell, not the Stars
emitter.
4 Save the project (press Command+S).
You’re all done!