Follow these instructions for creating keyframe animation:
In the Menu Bar, select Animation > Timeline.
Select Scene > Scene Graph.
In the Scene Graph, select the geometry you want to animate.
Go to frame zero on the timeline.
On the right side of the timeline, click (Keyframe).
This saves the current transformation values for frame zero. A red line appears at frame zero indicating a keyframe has been created.
Tap elsewhere within the timeline to navigate to a later frame and move the object within your scene.
Click (Keyframe) again to create a keyframe with the new transformation values.
Now when you play the animation, the position of the object will be interpolated between the two keyframes.
Optional: Drag another object, such as a shadow plane, under the animated object in the Scene Graph.
This sets the dragged object as a child of the animated object, so it will move with the object.