You can set basic restrictions such as blacklisting file types and files over a certain size.
Maximum allowed file size - Allows you to set a maximum file size for all Sync & Share files.
Blacklisted file types - Allows you to block the use of certain file types with the Sync & Share functionality.
To set a file type blacklist:
Note: Any preexisting files of that type will no longer be synced and will not be movable. You can only manually download them or remove them.
To set a maximum file size limit:
Note: Any preexisting files of a bigger size will no longer be synced and will not be movable. You can only manually download them or remove them.