This file comes with three scenes:

    Static scene

    Rigid body pile scene

    Constant spin scene

The rigid body objects are set to "animated" uncheck this on each object to let it fall. Search "CONTROLLER" in the outliner to see the rigid body controller objects. Under the physics tab you will find their rigid body settings.

To move the animation timing:

    Right click the top level parent (ex. "subButton.000") in the outliner, click "Select Hierarchy"

    Now, in the NLA editor, press "A" to select all NLA strips and move them left or right to change the time.

    Duplicate all strips to repeat animation, or press tab to edit the properties/timings manually.

Related Useful Documentation:
Nonlinear Animation — Blender Manual

Actions — Blender Manual

Shader Editor — Blender Manual

Questions will be added to the FAQ if anyone has any.