How Does the Sharing Experience Work?
Access levels assigned at the shared drive level represent the minimum level of access users will have to all files and folders within that shared drive. This ensures transparency, predictability, and scalability. As a result, the access level of a user for a folder within a shared drive can only ever be greater than the access level of that user for the shared drive itself; it can’t be more restrictive.
For example, a Commenter on a shared drive cannot be just a Viewer of a folder within that shared drive. However, a Viewer on a shared drive can have their access level expanded to Commenter or Contributor for specific files and subfolders within that shared drive. Therefore, if permission on a file or folder is downgraded, the action will take place on one or more parent folders where the permission was inherited from.