How do I allow group members to upload content to a group Resources folder?
Go to Resources.
Select the Resources tool from the Tool Menu of your site.
Click Actions, then Edit Folder Permissions.
To grant uploading permission to group members, to the right of the group folder, from the Actions drop-down menu, select Edit Folder Permissions.
This displays the folder permissions dialog box.
Note: You will need to make the folder a group folder in order to limit uploading permissions to a single group.