There’s not much to the setup:
- GRBL (not GRBL-LPC)
- Area 410x410 mm
- Enable Auto-home on startup
- Front-left origin
- Make sure that S Value Max in Edit->Device Settings is set to 1000
For auto-focus and crosshair function refer to the manual for how to setup. Instead of the crosshair method used by Ikier you could potentially just use “Pointer Offset” in Edit->Device Settings but that’s up to you.