There are two locations, one for the user ("User") and the other for all accounts on the computer ("Common"). The common folder is found at the root level of the hard drive. The User location is a hidden folder, that may be made visible. I would suggest using the common location at the root level of the hard drive.
Mac OS 10.12, 10.14, 10.15, Win7, Win10
VDL2.5.5, Finale 2010-14.5, Finale 25-27
Kontakt 4-6, various other soft synths