Duty Finder notification

[Kayyay]

I would really like to turn down the volume for the notification on the duty finder, but I'm not sure which volume setting it's under. It's not like music or sound effects where I can easily tell when I'm adjusting it so I was just wondering if someone knew which setting it was under. I typically play with my chat headset on with game sounds fairly low, but that *chink* sound always seem to scream at me and it scares me every time

Edit: I'm on ps4, if that matters