Set zero point and homing

[ProApibus]

Hello,

How can I set the zero point to the front left corner of my plotter and successfully homing there?

Is this also possible with software limits and how do I set them?

I have recently installed limit switches, but so far the plotter does not react to them.

The board: Mana SE v3.2
The plotter: EleksMaker Mega as a drawing device, with a pen holder

Yours sincerely
ProApibus