Sub administrators and folder permissions

I'm currently evaluating the trial version of FileVista 3.5. 

I have created a user account (test01), created a group for this user account (group_test01),  added the user to this group and ticked the box so that the user can manage users within this group. Then I created a root folder and gave this user (test01) full access to this folder.

When I login with the test01-account, I can create new folders and new users.
But how can I manage the permission of a created subfolder so that the user I created can only access the content of a specific subfolder?

Thanks in advance!

You need to add the group "group_test01" instead of the user "test01" to the root folder. When you do this you will see the root folder in the administration page when you login as group manager "test01". Then you can open properties of the root folder and manage permissions of subfolders there.