You can modify position, rotation, size, color and transparency of geometry objects in animation sets, and capture these changes in keyframes.
All object manipulation is carried out the in the Scene View.
When you manipulate geometry objects by changing their position, rotation or size you can use snapping to control the precision of your operations in the Scene View.
When you select animation sets in the Animator tree view, they are also highlighted in the Scene View. To get a clearer view of an object as you animating it, you can use the Options Editor to adjust the way in which the current selection is highlighted.