Open Node RED Notifications Sound

I'm using Node RED to push notification messages to my phone. Works great!

One question: How can I have different notification sounds on the phone for different messages?

I see the opportunity in the Join phone app to set the notification sound, but that seems to be for all messages. I was previously using AutoRemote and it let me use different sounds (don't remember exactly how).

I see no place in Node RED to specify the notification sound, although I do see how to change the icon.

One possibility would be for the join phone app to change the notification sounds based on the title of the notification.

Thanks, Richard