Instructors can create group folders in Resources that are only displayed to students assigned to that group. Instructors must first create the site groups. (See How do I create groups?)
Select the Resources tool from the Tool Menu of your site.
To create a group folder, to the right of the root folder, from the Add section of the Actions drop-down menu, select Create Folders.
This displays the Create Folders page.
Enter a name for the folder, then click Add details for this item.
This exposes the folder's detail properties.
Under Availability and Access, select Display this folder and its contents to selected groups, select the group name, then click Create Folders Now.