Feature request

[x40c]

Hello. Our firm is very interested in buying Your product.
Its a quite good solution for our needs, except one thing :
is it possible to expand those 3 groups the product have
at the moment to much wider value ?
Lets say, we`ve got a superuser. He can make a group and
add group members , manage them, and other stuff. Users
from one group have access to files only from their own
group, etc.