Enable this group policy to choose folders to sync.
Only folders under user's home folder can be synced. Precede the folder with ~/ to specify the location of the synced folder in the user's home folder. For example, to sync the user's Library folder, enter ~/Library.
This policy is for syncing user's preferences and settings. Do not sync folders outside ~/Library and ~/Documents/Microsoft User Data in this policy, as they cannot be synced correctly.
Once enabled, this group policy takes effect when users log out and back in.