Setting User Privilage Under Shared Folder

Dear Comunity and WD Support

I have some idea to setting User Privilage Under Shared Folder. Ex : I Have Multiple User Under 1 Group, i want to use 1 Shared Folder named GROUP and under that GROUP i create folder for every user. i already tried using the web interface and ssh still cannot implement it. did any one have an idea to solved that issue so every user under 1 Group can see other user files in the same group but cannot modify it.

Thank’s

Nb : sorry for my bad english