You can save them wherever you want and load the drawing set that is synced. It might not be the default but it’s done. I believe some of this stuff on default locations is set by the way Trimble has configured it’s user data, which is stored in the AppData folder of your Local Disk drive.
Are you constantly updating your drawing sets or something? If not, you can always purge the drawing sets located at
C:\Users\<YOURNAME>\AppData\Roaming\SketchUp\SketchUp 2022\SketchUp\Plugins\ConDoc Tools\drawingsets
and substitute your own.