Managing folder access allows users to share inventory, and enable or disable the visibility of folders to specific users. This provides the ability to invite multiple users, and simplify their view by only exposing specific folders to each individual.
Any User sharing a home folder has the ability to manage the shared folder of any other user within that location, hence there is an assumed level of trust between any shared users.
Shared folder access does not override User Roles, so a Publisher User cannot view an Advertiser folder that has been shared with them.