Push Button Automatic Transmission Control Panel Help

I have a 1964 Plymouth Barracuda that was completely disassembled including the Push Button automatic transmission control in the dash. It needs to be reassembled however the auto body shop does not have that level of experience or knowledge and the person who did the disassembly has since left the shop . I need to find a place where I can either send it out to get fixed or provide me instructions on how to do it myself. All the buttons and cables were removed to have them "reconditioned/rechromed" and I was not privy to how it was all done during the disassembly.

Appreciate any help with this situation.