Apple Motion 4 - Manual (Page 1196)

If you were to move Group A below Group B in the Layers tab, Group B would be rendered
on top of Group A.
Group B on top in Layers tab Result in Canvas
The Layers tab also shows object relationships in terms of parenting. The parent-child
relationship is displayed in the Layers tab through the use of indenting and disclosure
triangles.
Child of Elephant Group
Children of Group
Parent of all objects
beneath it
Parent of Elephant
The Layers tab is not the only indicator of order when considering objects in 3D. When
depth-sorted, an object can be at the bottom of the Layers tab and yet appear to be on
top of everything else in the Canvas, because of the object’s position relative to the current
camera. The most common way to adjust depth order is to change the Z position of a
layer or group.
1196 Chapter 18 3D Compositing