Apple Motion 3 - Manual (Page 765)

Chapter 9 Using the Replicator 765
The following example uses two shapes as source layers for a single replicator.
To use multiple source layers for a replicator pattern:
1 Shift-click to select the layers you want to replicate.
This example uses a white circle shape and a red elliptical shape (both created with the
Circle tool).
Note: Command-click noncontiguous layers that you want to add to the replicator.
2 Do one of the following:
 In the Toolbar, click the Replicate icon.
 Choose Object > Replicate (or press L).