Collapsing and Expanding Groups and Layers
Motion allows you to collapse and expand different parts of the Timeline layers list to
show more or less data to accommodate different working styles. Layers with applied
masks, filters, and other objects can be collapsed to hide those effects bars. Furthermore,
whole groups can be collapsed to hide all objects contained in them.
When a layer or group is collapsed in this manner, it still appears in the Canvas window.
Unlike enabling or disabling tracks, collapsing and expanding the Timeline layers list is
only an organizational tool to help manage the view of the Timeline.
To collapse or expand a layer or group in the Timeline
Click the disclosure triangle to the left of the layer or group name. If no disclosure triangle
is present, that object cannot be collapsed or expanded any further.
Using the Timeline