-To add some new functions in the folder settings, so that collaborators will be deleted automatically when moving folders to another folder.
-To add some new functions to the folder settings so that users will be able to change roles like the Privacy settings. We want to control collaboration using roles on the the upper folders. However, in this case, folders which are not intended, can be created in subdivided folders. If any files were moved to subdivided folders accidentally, the file can be visible from users who are not intended to.