Displaying Categories in the Timeline List
Use the Timeline list to display the information you need. Click the expand triangle next to a category to display its channel information. Click a triangle again to collapse its contents.
For instance, to view the channel information pertaining to the Z position, expand the Transformation category.
To automatically expand or collapse items:In the Timeline controls, click the Context button.
When you edit a layer or object in the active viewport, the Timeline list automatically expands to display that layer or object's categories.