Granting access to a subfolder(but not containing folder)

Done a search for this(here and on Google) but can't find an answer:

I have two user accounts on my computer. We'll call them Alpha and Zeta.

For user Alpha, I have a subfolder called Voiceover in my Documents folder.

I would like to grant user Zeta access to subfolder Voiceover ONLY

I granted Zeta Read and Write access to Voiceover but since Zeta does not have access to the containing folder(Documents), Zeta can't seem to access Voiceover.(or at least that's my guess)

Do I have to grant access to a containing folder(e.g Documents) in order to grant access to a subfolder(e.g Voiceover)?

I hope that makes sense

thanks,

-J

Thank you both for the responses! What I ended up doing(which I think was the same idea as using an alias) was:

-Granted access to Zeta for the containing folder(Documents) and the subfolder Voiceover in Alpha.
-In Zeta, I added the Voiceover folder to my sidebar.
-In Alpha, I removed access to Documents but left access to Voiceover.

Result: Zeta has access to Voiceover but not Documents.

Cheers!