I am looking specifically at backing up my settings for qimage.
There's no "backup" feature as such in QU other than saving various settings as Fred has described.
However, one option is for you to manually save these folders to another HDD:
C:\Program Files (x86)\Qimage-U
C:\ProgramData\ddisoftware\Qimage
The latter is the most important as the program can always be re-installed
The Program data folder can be saved from within QU by using Utilities - Migrate/Copy Application Data ..
At the end of the copy process it asks if you want to use the new location or leave it as a backup.
I would ask, why backup
only QU in case there's a serious crash or HDD failure? With backup software used regularly, everything is taken care of.
Terry