Groups problems

Hello, I am using owncloud 10 and I want create groups with only N users restrictions and limit storage. It is posible in this version? Can I resolve this??

For example: I want as super admin, create a group with his group admin. And i want the group admin creates only 10 users and no more. Every user has only 2gb of storage and no more.

No, that is not possible inside ownCloud. There are a couple of feature requests around group administration, group quota, etc. you are welcome to add to those. Generally one design goal is "frictionless" for us which means self-service and restricting the number of users to be created in a group isn't really part of that ...
However the group quota will come and we might check along if this is possible as well. Can you help?