Occasionally you might want to divide a single object into multiple objects, each in its
own Timeline track. You might do this if you want an effect to apply to one portion of
an object but not to another part. Or you might want an object to change layer order
midway through, to create the effect that objects are moving in 3D space. When working
in 3D, you can split camera tracks, too. Splitting tracks allows you to turn one object into
multiple pieces and then manipulate each segment of the object on its own track.
To split an object bar
Select the object bar to split.
Place the playhead on the frame where you want the split to occur.
Choose Edit > Split.
The object bar is broken into two pieces, each positioned on its own track.
Using the Timeline