Only the owner of the drop box can open it. A user can copy items to the drop box, but cannot open it. There are several types of permissions users can have on macOS: Let’s start! What permission types are on Mac? In this article, we’ll show you how to view and change file permissions, as well as how to stay in control of your application permissions. If at some point you need to restrict access to some of your files, you can easily do that by changing permissions.
Those determine who can view and modify data on your computer. Every item on your Mac, whether it’s a file or folder, has a set of permissions.