Apple Motion 5.1.1 - Manual (Page 259)

Chapter 8 Timeline 259
Place one group inside another
1 In the Timeline layers list, drag one group on top of another group.
A white border highlights the destination group.
2 Release the mouse button.
The first group is now nested inside the second group.
Alternatively, you can select the layers you want and choose Object > Group (or press
Shift-Command-G).
Note: There is no limit to the number of groups you can nest.
Return a nested group to its original state
m Select the nested group, then choose Object > Ungroup (or press Option-Command-G).
The nested group is restored into individual layers. Any group in another group can
be ungrouped.
Remove a group from a nest
1 Drag the group out of the existing parent group to the area beneath all existing groups.
The outline of the Timeline layers list area becomes highlighted.
2 Release the mouse button.
The group is restored to primary group status.
Delete a group, layer, or effects object track
1 Select the group, layer, or effects object in the Timeline layers list.
2 Press Delete.
Alternatively, you can also Control-click an object, then choose Delete from the shortcut menu.
Select more than one group, layer, or effects object track
All of the operations just described can also be performed with multiple tracks. For example,
rather than moving just one object from Group 1 to Group 3, you can select two or three objects
in Group 1 and move them all at once.
m Command-click to select tracks in the Layers list.
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