What you are looking for is a scan template. Visit http://www.support.xerox.com/support/workcentre-5735-5740-5745-5755/support/enus.html and search for "create template". Complete directions on how to do this are there.
PS: If this answers your question, please "Accept as solution" and feel free to kudos the post.
We recently got the 5745 in our office. We do a LOT of scanning and it takes a good bit of time to set up the machine to scan correctly every time. Is there anyway to save the settings as default?
I'd greatly appreciate any help!