Individual app audio and volume control and settings.

Hi ZoltánBalázs2,

That is still not possible because volume control is only specific to the audio output device (speakers). You control volume only through the TV or any external audio device with speakers. The only exception to this would be volume control for headsets that
don't have the volume control built in. In this case if you plug in a headset to the Xbox One controller via the 3.5mm jack, then volume is controlled by a slider found in the Xbox Accessories app when looking at the controller's settings.

In conclusion, the Xbox One console is not responsible for the volume of the audio output as that is handled by the audio output device itself. The Xbox One just processes the audio formats to whatever you have set it to in the Audio output settings and
then the audio travels to your audio output device, which is what has the volume control. Therefore, as far as volume control goes, the Xbox One Media Remote is only able to control the volume on your TV that you have set up with your Xbox One under the TV
& OneGuide settings and then in "Device Control".

As mentioned previously, please refer back to that support article on what the remote is used for.

This has been discussed before. It would be very nice to be able to control the volume of each person individually, but that would require that each chat participant be treated as an individual audio source/channel to each other person for them to be able
to control the volumes. Would probably require a code rewrite from the ground up.

On any headset that has its own volume controller, you should set that controller to max volume. Then use the adapters controls to set your chat, and game audio volume to more suitable levels.

Adjusting both controls can lead to odd audio problems as StainableDog describes.

I avoid using the Xbox One controller headphone jack because I prefer having physical buttons to mute and adjust volume. If you don't spending a little bit of extra cash, I'd recommend picking up the Xbox One Stereo Headset adaptor or the Turtle Beach
Headset Audio Controller Plus. Both plug into the bottom of your controller, offer great sound quality and have physical buttons for muting your mic, and adjusting individual volumes for game audio and chat audio.

I checked the audio setting in xboxlive section of mw3 and all I saw was volume control