I would advice to read the manual that you can download from [https://business.sharpusa.com/portals/0/downloads/Manuals/cas_man_XEA42S.pdf|Sharp’s website here]. The part you’ll probably be most interested in is starting on page 33 (31 if you follow the numbering on the pages themselves).
To be honest it does seem like a complex process at first sight, but I assume if you know the machine it will be easier to do.