Native Access won't allow a custom content disk location

artysan

I want to use a 350GB APFS partition of my internal SSD. NA simply shows error, error, error… No suggestion is offered to remedy this. Lacking any explicit support for this, I have tried a long list on my own.

Naming the drive's root level Kontakt Library, NI Library, NI Libraries, Kontakt Content, NI Content. every attempt just says wrong location. Does anyone know the well-kept secret?

thanks in advance!

artysan