Looks like you just have to set offsets in your slicer. Not sure how to do it in Cura or Slicer. If you're at all familiar with Gcode, you could try adding the lines
G0 X45
G92 X0
in Cura and Slic3r's start gcode/script. I know that in Simplify3D, you can just set offsets. The gcode thing should work, though. Feel free to msg me with any questions. Kinda late now, and I don't think this answer's the most eloquent.