Hi. I'm afraid I missed your post for info on how I made the remote.
I used a pattress box for an architrave switch which I had spare (50p in B&Q at the moment) - 4 miniature push to make buttons from Ebay (cost £2.11 for 5) - 5 core cable and servo connectors to plug into the board (On the megapoints videos I think Dave uses a 5 pin connector but I didn't have one so used a couple of 3 pin).
I didn't have a blanking plate to mount the pushbuttons so I made one from 3 layers of plasticard glued together.
The instructions for wiring are in the documentation for the board. Connect common to one side of all the switches and the remaining wires to other side of each switch.
I used white for common, red for low, yellow for program, blue for high and black for mode.
The order of the pins on the board correspond to the pushbutons:
Left to right
Pin1 - Low
Pin2 - Prog
Pin3 - High
Pin4 - Mode
Pin5 - Common/Ground