onedrive file redirection / disable

Hi, i have 25 users that are out of an active directory domain and has to do the following:

1- that the local folders for desktop, downloads, documents and images are synchronized in OneDrive by default and the users cant change this.
2- that the user can only save files in those folders (zip, word, excel, etc), and cannot save to the C or D drive or to a USB drive
3- that the files are available offline
4- that synchronization with OneDrive is mandatory and that the user cannot change it.

Users are not local administrators, computers do not belong to a domain, or active directory, users have a basic Office 365 account and have 1 terabyte of space in the cloud.
Any idea how i can achieve this?

Thanks

C.