When you double-click a file on your Mac, the operating system will automatically open the file using the program assigned to that type of file. It is possible, though, to open the file using ...

Windows says your file is in use because it's open in another program? Learn how to force rename, delete, or move the file.

However, this password only controlled whether someone possessing it could open the file. Any additional file controls had to be set in another program.