I have an external HDD connected on the USB port serving as a 24/7 backup for multiple users, on Local LAN and over the Internet. 

I would like to know if there is a way to set up multiple users (with the proper permissions) so each one can only read/write on their folder instead of seeing the whole drive.

If this is not possible yet on current firmware, could the devs implement it? It would be extremely useful!

Thank you!