@Furibundus Short answer: No.

The EleksMaker Mana board uses a Nano clone running Grbl, there is not enough memory for Z-surface mapping. You would need to change to a 3D printer style board and use firmware like Marlin or similar which has this capability. I did some work in T2Laser to map surfaces and store the cooridinates on the PC, then when I output the Z commands I can offset. This was a work in progress but never completed as the business opportunity faded away (probably because other options exist which are better).