You can now easily Manage your Resource Sub -Folders through the Resource menu in the Management Portal.
Within the Management Portal you can easily re-name or delete an existing Resource Sub-Folder. This new Menu option will also allow you to create a new Sub-Folder which can then be assigned to a Parent Folder within your Resources.
To manage your Sub-Folders you will select the Resources Menu, you can then select "Sub-Folders" from the drop down Menu.