How do I make Doxie Pro only scan one side?

Doxie has three built-in scanning modes – all of them automatically scan both sides of a document and then remove any sides that are blank. It can occasionally be wrong and keep a blank side, especially with thin paper. And if the backs of a document have stuff you don't care about (say, a credit card statement where the information you want is on the fronts and the legal jargon is on the back), you might want a way to manually switch to one-sided scanning.

To do this, create a new scanning mode by going to the popup menu next to the Scan button:

Then, create a new scanning mode with Scanning Sides set to One Side (Simplex):

Select that mode back in the main Doxie window whenever you want to scan one-sided only, and that's it!

Here's a video to show how to add this mode, step-by-step.