D-Link ShareCenter DNS-320L User Manual page 283

Section 4 - Configuration
After you create a new backup, it will appear in the table in the Archive
section.
You can control which archive folders are included in the Playback List
that is accessible from the Playback screen by adding or removing a check
mark in the Playback List column. If you want to delete a Backup folder
from the archive, click the trash can icon for the folder you want to delete.
D-Link ShareCenter DNS-320L User Manual 277