Apple Motion 5.1.1 - Manual (Page 258)

Chapter 8 Timeline 258
2 When the position indicator appears in the location you want, release the mouse button.
The tracks are reordered.
Move a layer from one group to another group
1 Drag the layer icon in the Timeline layers list over another group.
A white border highlights the group.
2 Release the mouse button.
The layer moves into the selected group and is placed above any existing layers in that group.
Drop a layer inside a collapsed group
You can also move a layer to a specific place in the new group by dragging it between existing
tracks in the new group. Motion’s groups and layers are “spring-loaded,” which means that when
they are collapsed, dragging an object onto them and pausing causes them to temporarily
expand, like folders in the Finder.
1 Drag the layer onto the collapsed group in the Timeline layers list.
2 Position the pointer over the name of the group until the group expands.
3 Drag the layer to the desired location in the group, then release the mouse button.
Nest groups and layers
To help organize large groups of layers or to create some kinds of special effects, you can place
one group inside of another. This is called nesting or grouping.
There are many reasons to nest layers or groups. Doing so simplifies your composite, grouping
layers and effects objects (behaviors, filters, masks, and so on) into fewer containers. Nesting also
lets you manipulate a group of layers and effects objects as one. For example, you can take the
individual letters of a title (each animated on its own) and use nesting to animate the group of
them across the screen. You can also use nesting to create complex particle systems. You can
nest multiple layers and effects objects into a group, then use the entire group as the emitter
cell. For more information on particle systems, see
Particles overview on page 513.
Note: You cannot use the Group command with layers that are in different groups.
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