Hyperdeck/Atem : too many audio tracks

Hi,

Is there a way to get only 2 audio tracks with audio content instead of 4 (2 that are blanks)

I record from an Atem 1 un a Hyperdeck and each time I have to suppress 2 tracks without content.

Is there a way to modify any setting to do so ?
Thanks

If you have the new hyperdeck mini there is.. The older hyperdecks only support 16 channels audio.