Audio Keyframing on multiple audio channels

Hello,

My footage has four channels of audio that I am editing with. They are not stereo paired, and I would like to keep them as their own channels. My problem is that I cannot efficiently add an audio keyframe to all channels at once. I have to individually add a keyframe on each track in hopefully the correct spot. Is there a way to add a keyframe to multiple tracks, without having to pair them?

Thank you very much!!!

Kayla