Apple Motion 3 - Manual (Page 990)

990 Chapter 11 Working with Generators
Sharing Saved Generators
By default, any generator that you save in the Library is stored in your user folder:
/Users/username/Library/Application Support/Motion/Library/Generators. To share
custom presets, templates, layouts, behaviors, filters, or Library content with another
user, the other user must copy the files into his or her home directory.
Applying Behaviors to Generators
Like all other objects in Motion, you can apply Basic Motion, Parameter, or Simulation
behaviors to a generator. This section describes applying the Randomize parameter
behavior to the Opacity parameter of the Star generator to create a flickering star.
To apply a Parameter behavior to the Star generator:
1 Select the Star generator and display the Generator tab in the Inspector.
2 In the Generator tab, click Spike Opacity to select the parameter.
The selected parameter appears in a darker gray than the other parameters.
3 Control-click the Spike Opacity parameter, then choose Randomize from the shortcut
menu.