What is "Lay-back"

[tongzilla]

1. Normal door (pictured above): Closing only -- Horizontal Hinge
2. Door turned 90 degrees clockwise (e.g. cat door): Layback only -- Vertical Hinge
3. Door turned anywhere between 1. and 2.: Simultaneous Closing and Layback -- Angled Hinge

Hinge is located in your Left Shoulder, but is controlled via the Flat Left Wrist.
Hinge Action produces a Hinge Motion of the Clubface. It is Clubface Control.

Note that a Hooding Motion (where the Clubface loft is decreasing) cannot be produced in golf. The door would need to be turned 90 degrees anticlockwise! Or you can twist the blade on the Hinge so that it is less than 90 degrees to its Plane of Rotation. However, you can decrease the Clubface loft at Impact Fix by placing the Ball further behind Low Point. But this Hooded Clubface is a static position as opposed to a Motion.