Your One For All remote can operate up to three devices. Most keys will control your streaming box, but you can control some functions of your TV and Sound Bar or Audio Video Receiver
If you set up a TV, the Volume Up, Down, Mute, TV Power and TV Input keys will then control your TV. The menu ring will light up in yellow to show you are controlling the TV.
If you then also set up an Audio Device such as a Sound Bar or Audio Video Receiver, the remote will then control the Volume Up, Down and Mute of that device. The menu ring will light up in green to show you are controlling the Audio Device.