You do this first by selecting external modules from the maintenance screen. Press insert to add a new module. Press enter and enter again to continue.
Press enter and then enter to continue.
Remember anything you backup using Alternate Backup will have to restored using Alternate Restore, anything you backup with the regular backup will need to be restored using the regular restore. Where there are options, there is also a chance for error. This new procedure is also more Y2K compliant. Please see the section below on a backup routine.