You can make your network folder as favorites by following the steps mentioned below:
Step 1: Open PlayerXtreme on Apple TV, a home screen will appear. Click on “Add” button to add a network location.
Step 2: A network screen will appear that shows network shares discovered by the app. Click any network that you want to access.
Step 3: A network folders screen will appear. Click on your desired folder. Swipe up from your Apple TV remote and click on the “star” button to mark the folder as favorite.
Step 4: The favorite folder will appear on the home screen of the app as you can see below.
Note: You can also mark your folder as un- favorite. On your home screen where favorites are listed, tap and long press on the folder from your Apple TV remote. Click on “delete “to remove the favorite folder from your library.