Apple Motion 4 - Manual (Page 529)

To affect only Specific Objects
1 In the HUD or Inspector, set the Vortex Affect parameter to Specific Objects (without
moving any layers).
2 If it is not displayed, show the Behaviors tab in the Inspector.
In the Vortex parameters, an Affected Objects list appears.
3 To apply the vortex to specific objects, drag the objects from the Layers tab to the Affected
Objects list. Like the Object wells, you can drop the object when the curved arrow appears
above the list.
529 Chapter 9 Using Behaviors