Office 365 (OneDrive for Business) - Setting up Managed Backup using OneDrive for Windows
You can use these directions to automatically back up the files on a Windows computer's Desktop, Documents, and Pictures folders using OneDrive.
About OneDrive managed backup
Once this feature is enabled on a computer, all files in your Desktop, Documents, and Pictures folders are synced automatically to OneDrive.
Files can easily be synced across multiple computers by setting up OneDrive managed backup on multiple computers.
When you set up OneDrive managed backup, it will only back up your logged-in Windows account's folders. Other accounts that have signed into the computer are NOT backed up.