Mux alternate audio track support

Hi,
I’m trying to add audio description track to a video.
Due to accessibility concerns we need to provide videos with and without audio description track.

I have contacted the support team at Mux and they say that this could be achieved by adding an alternate audio track to the video. Is it possible to enable adding alternate audio track to a video in Dato CMS and retrieve the video with graphQL with default audio and alternate audio track?