While searching the PC - if its a time consuming search:
you see it going thru these directories alphabetically, then you suddenly have an idea, that it could be under one of these two directories.
Press the SUGGEST button.
It opens a dialog with:
Reduce search to file types of: ___
Start
with these directories: [Folder chooser]
(if they were already started theyll be gray)
Additional text: [original text here, you cannot delete it]
Choose the directories to start with and add them.
The search skips to those directories and then continues what it was doing.