Cloud Backup for Microsoft 365 » Backup » Configure Backups » Organization and Backup Object Selection » SharePoint SItes
SharePoint Sites
The Sharepoint Online backup option lets you perform the backup of all the sites in the SharePoint
Select SharePoint Site(s) For Backup: All sites are selected by default. You can individually deselect some of the sites or you can deselect all the sites and then individually select some of the sites.