Open the OneDrive desktop app. Navigate to Settings ->Sync and backup ->Manage backup. Toggle on all desired folders. Once ...

OneDrive's lack of configurability and moving system folder locations makes me uninterested in using it for myself, but it works fine for an average user. You can't add any folders to be stored online ...

I haven't looked at the shadow copies feature of OneDrive to see how it would work. If you computer gets infected with Ransomware, so does your OneDrive so I would look into exactly how it would ...