This app allows you to create shortcut to DocumentsUI (default native Android File Explorer) for Android 7.0 Nougat. You can customize name and color of the shortcut icon. I tested it with Google Pixel phone and Google Pixel C tablet and it works great. After you create your shortcut, you can uninstall this app. Please leave a review or rating if you like this app. Thanks. Enjoy.
How can you tell if an Android app is safe?