Redirecting / syncing "3D objects library" to OneDrive

Goodmorning all, 

I have a bit of a challenge redirecting/syncing the library "3D objects" to OneDrive for Business. 

This is something a user can manually do, but i want to configure this through a policy for all users.

There are no built in GPO's for this so i've tried everything like adding registry items regarding 'user shell folders", tried sym links but nothing seems to work. 

Does anyone have a good suggestion or is this setting simply not possible to manage centrally?

Best regards

René