HomePod Question on playing HomePod through ATV

[GIZBUG]

My AppleTV is connected to a 5.1 stereo system. Most of the time I listen to the ATV just through the stereo system alone. However, my kitchen is behind my living room area, where I have a HomePod on the counter. When in the kitchen, I enjoy the ability to Airplay to the HomePod so sound also comes out of that from my ATV. However, it is cumbersome to always have to exit out of say YoutubeTV or Netflix, hold down the play/pause button on my harmony remote, select the HomePod along with my Denon receiver, and then go back to what I was watching to hear sound out of all devices.

IS there an easier way for me to enable / disable using the HomePod with my setup? I've never dabbed into using Siri shortcuts, not sure if that is an option. Thanks.