Administer Folders

I would like to require that all users who are in a form in a specific responsibility use a specific folder.  I also would like to restrict them from changing to a different folder and also changing the items in the default folder.  I set up the Default Folders by Responsibility and indicated to restrict field and folder functions, but it doesn't appear to work.  When I log into that responsibility as a user, it allows them to change folders and modify the folder.