Any time you need to know more information about a file, you can check the “properties” of the file. A right-click of the file followed by selecting Properties from the list will open information about the file size, create date, security settings and more.
To save time you can press the Alt-Enter key combination to open the file properties.
If you use file permissions on your files, you can select a list of files and press Alt-Enter. Once the Properties box opens you can change the security settings for all the files.