Critical Alert not found

I just got my Ring doorbell installed.
I need to leave my phone on silent at night as I have a baby.
There is no option for critical alert setting in notifications on my IPhone. The Ring app shall offer that in Notifications but it doesn’t…
I don’t understand why.
Can someone help me? What do I do wrong?

Hi @Echo0605. Do you have a Ring Alarm system? You can see more information about critical alerts here.