Third-party remotes are additional remotes that you can link from your fire stick. At a time, you can only link seven remotes to a single fire stick. You can go to the fire tv “menu” and select settings. Then, choose Bluetooth devices and controllers, then choose the game controllers. An option showing “add a new game controller” will appear on the screen; you must select that option. Pair the controller in the pairing mode. Finally, the controller’s name will appear on the screen.