Public folder with restricted user acces to subfolders based on access

[BlackWidow]

Hi all!

First of all, excuse my English!

I'm trying to do something like this: a public share with subfolders where all users can read and execute form all subfolders, but they can only read/write/delete on certain subfolders.

Example:
Share -> primary share (windows - cifs) all users can log in
Subdirectories: Department 1 <-Dept1user has full access, other users only read and execute
Department 2 <-Dept2user has full access, other users only read and execute
Department 3 <-Dept3user has full access, other users only read and execute
Department 4 <-Dept4user, Dept2user have full access, other users only read and execute
Department 5 <-All users have full access

The main purpose is that all user should map only the share folder and have acceess as explained above.

I'm using FreeNAS-8.3.1-RELEASE-p2-x86 on a VM machine.
All clinets have windows OS.
I just keep trying to to what I explain above, but with no good results

Can anyone help me with how to achive this?

Thanks!