Using ADF, you can automatically scan the front face and back face of an original. Also, you can scan only one side of the first page, then scan both sides for the remaining pages.
For details, refer to Here.
Select the resolution of the original for scanning.
For details, refer to Here.
Select the size of the original to be scanned.
There are various scan sizes, including [Auto] for scanning in the same size as the original size, [Inches], [Metric Sizes], and [Photo Size].
For details, refer to Here.