Make a copy of the layer and minimize it. We also must cancel all the Blending options, because this layer will have different ones.
Blending Options>Gradient Overlay:
Next try to represent the button, reserved for opening the disks’ frame. Select for this operation the Rectangle Tool (U) and represent a rectangle, like in the picture:
Blending Options>Gradient Overlay:
Make a copy of this layer and place it inside, the same way shown next image:
