Hi Barry,
If you need to drill into a caesarstone bench you can try use a diamond tile drill piece.
How to use it.
-Add some water as your drilling to help cool the blade or it will go blunt quick.
-Go slow and start on an angle first.
-Put sticky tape on the area to help it not crack. (strong pvc duct tape)
I have a diamond tile drill and some left over 20mm caesarstone from my kitchen reno I did.
If you like I can try drilling into it and tell you how I go??
If not just use a strong adhesive like JB WELD. That stuff works well if you want to glue anything on any surface.
I'm pretty sure the diamond drill piece should work. Plus people cut caesarstone with a diamond blade.
Link below of the drill piece you need.
Drill Bit Diamond Sutton 10mm Core Blue Ceram 370400100 I/N 6350177 | Bunnings Warehouse
^^Bunnings tool section told me how to use it when I bought it so ask them any question & they can explain it a lot better. I did it first go with the tips they told me and I didn't crack one tile while drilling the bracket holes for my frame-less shower screen.
good luck and sorry I don't really understand what you need to do beside the drilling part lol.
Cheers