You'll have to keep those inside the bb folder root, in your case probably C:/bb.

BUT: you can move the Realtrack and Drums folder elsewhere. In BIAB preferences you'll have to re-address them to be found elsewhere.

OR: you could install the complete BIAB on another drive or even partition instead. Bought me a separate 2 TB internal drive for BIAB. You could also run BIAB off a separate USB plugin drive like from the WD 3 TB USB 3.0 drive it was delivered on when you have the Audiophile version. F