Other idea, use the mounting from the admin-interface but only mount it for the admin user. Then go to the file view and share the external folder.
It is almost what I want to do ! I didn’t think about that ! The only thing with this solution is that we need to activate “resharing”.
But i think using this + the option of “not allowing some group to share” + “allow sharing intra group only”, I could be able to do what i’m trying to.
Thanks tflidd !
Edit: actualy, i just saw i can enable “sharing” directly from the external storage configuration for a specific directory whitout enabling the global option “allowing re-sharing” in admin panel. This is exactly what i was looking for, now I can handle permission from the admin on this local external storage! Thanks again!