Within the Sliding Banners administration area, click on the padlock icon next to the Banner you would like to assign permissions to.
Start typing in the empty field under Group Permissions - the system will suggest a User Group for you. Click on the suggestion to add it.
Change the Operation drop-down to View.
Click on the Add button to add the permission.
If you wish to restrict the permissions to just this User Group, you will need to remove the All Users group permission by clicking on the Remove link at the end of the row.
Click on OK within the popup window that appears.
The User Group will be removed.