-If this policy is set to any value, Firefox reads certificates from the system certificate store. This is currently only supported on Windows, but will be available on macOS with Firefox 63.
+This policy can be used to install certificates or to read certificates from the system certificate store on Mac and Windows.
+
+The ImportEnterpriseRoots key will cause Firefox to import from the system certificate store.
+
+The Install key by default will search for certificates in the locations listed below. Starting in Firefox 65, you can specify a fully qualified path (see cert3.der and cert4.pem in example). If Firefox does not find something at your fully qualified path, it will search the default directories.
+
+Certificates can be located in the following locations:
+- Windows
+ - %USERPROFILE%\AppData\Local\Mozilla\Certificates
+ - %USERPROFILE%\AppData\Roaming\Mozilla\Certificates
+- macOS
+ - /Library/Application Support/Mozilla/Certificates
+ - ~/Library/Application Support/Mozilla/Certificates
+- Linux
+ - /usr/lib/mozilla/certificates
+ - /usr/lib64/mozilla/certificates
+ - ~/.mozilla/certificates
+
+