Setting X and Y zeros

[turboshad1]

I have a piece of 12x12 PEI so I wanted to print a 12x12 square directly to the glass with the left nozzle so I knew where to position my sheet on my N2 Plus. I've never done this before and when I tried it printed completely off of the glass on the front and left side. Is there a way to set the zeros for X and Y to bring the full print capabilities back onto the glass? Thank you.