Daily backups
Open Backups in the menu. Tick “Back up automatically every day” and choose how many daily backups to keep. Back up now takes one at once.
A copy somewhere else
Set “Also copy each backup to this folder” to another drive, a USB disk, or a OneDrive or Google Drive folder. If the computer fails, your books are in that folder.
Restoring
Choose Restore beside a backup, or Restore from a file. A restore replaces the current data, so OSuite first backs up what is there: a restore can be undone.