Third-party app icons can be rearranged on Apple TV units running Apple TV 5.1 software or newer. All that's needed is the remote control. Follow these steps to move apps around on the home screen:
1. Use the remote control to select the icon you wish to move on the home screen.
2. Press and hold the Select button on the remote to enter wiggle mode.
3. While the icon is wiggling use the remote to move the app to a different position.
4. Press Select on the remote to lock in the new icon location.