Mapping for hex nanoleaf

Hi, Newby here. I made a nanoleaf light consisting of 12 hexes with 24 leds in each. There are 4 leds between each hex that aren’t used. I have no idea how to map these. I am think of mapping a hex in X and y then using the z axis to select the hex. This should enable me to set a different pattern to each hex.
The problem is that I don’t know where to start.
TIA for any help.