How to add sonos as an alarm

So… I have a bunch of ceiling speakers hooked up to some sonos connects. Ideally I want to make these siren when my alarm goes off… I just can’t figure it out in smart things… I’m able to get it to play sounds for specific contacts… But i don’t see an option for siren when alarm is triggered

Ok I think I got it. The classic app wouldn’t let me add a device for audio notifications. The new app does. I’ll test it out tomorrow when everyone is awake