If you are mounting Pi-Pan Assembly on Pi-Case directly
Affix adjacent servo horn directly on the case, and mount the head assembly over it (attach servo screws from bottom).
If you are mounting Pi-Pan Assembly else where
Use two of adjacent spacers, peel off the glue cover sheet to affix on mount plate.
Affix the spacers on the mount plate as shown in adjacent picture and press firmly.
Affix servo horn as shown (with screws from bottom)
Spacing on this plate is as seen in adjacent picture: (hole size 3/16”)
Use this spacing to make holes on your target mount plate.
Completed assembly, ready to mount on your target plate.