This question is probably geared more to Laserweb than Smoothie but...

This question is probably geared more to Laserweb than Smoothie but…
I’ve got a smoothieboard installed and its talking to laserweb seemingly fine (at least for what I’m doing), but I only know how to place a picture in either the top left or bottom left to begin. I wonder how I can set the program to start at an arbitrary point - say x+15 and y-15 rather than x0 y0 or whatever the top left coordinates are.