Did you get this worked out? It's just line = power in to the switch Load = switched power to source. No neutral for the switch only ground.

I.E. You have one wire that has the power in from the source with no neutral wire needed. Like you use the white wire as power in to the switch then the black or "Load" wire goes back to the light or what ever. The neutral & ground is located in the main box where the make up is done. Just use one romax wire to feed the switch and you are fine. Ground of course goes to ground at the source and the switch.