personally I wouldn’t have my base or sub folders that many layers deep into the drive
Base = F:\Commercial
sub folder: F:\Commercial\Canned Heat - Discography
sub sub folder: F:\Commercial\Canned Heat - Discography\1968 - Boogie With Canned Heat
depending on where I'm working sometimes my folders are another layer deep
G:\Encoded Bootlegs\LED ZEPPELIN
G:\Encoded Bootlegs\LED ZEPPELIN\1968
G:\Encoded Bootlegs\LED ZEPPELIN\1968\Led Zeppelin - 1968-12-30 - Spokane WA
don’t switch because when I do it sends all the files in your sub folder up to your base folder - some times may be useful - I personally don’t use it very often at all - when i do it is usually to put files back because I hit that button by accident - ha ha ha
My base folder is set to F it is my drive that holds only commercial music nothing else. The program will load from that folder when it starts instead of its default folder of C:\ my documents and then having to go to the base folder to load sub folders etc.
Also my base folder is set to 0 above the read folder - works best for me - no one said I’m doing it the best way either - I suggest playing around with a few small files to get it where you like it - I have to sometimes change the layouts do to the music I’m tagging.
I don’t know if this is what you’re asking for, and hope I helped without confusing that engineer mind of yours.