Some goodies I dug up for y'all.
Attached image 1 is an overview of the FGB worksite via L2.
Image 2 is an actual photo of the worksite. As you can see, there are three numbered attachment points on the FGB.
In image 3, you can see the back side of the PDGF "PAMA" (which is Russian for "frame"). As you can see, there are also three attachment points on the PAMA, which attach to the three attachment points on the FGB. The PAMA is the interface between the FGB attachment points and the PDGF.
Finally, image 4 is a photo of the front side of the PAMA, with PDGF attached.