Why Does iPad Allow "Ignore Limits"?

I have set up two kid iPads with screen time limits.

Yet, when I go to an app after the limit has expired, it has a choice "Ignore Limits"

There are then three choices: One More Minute, Remind Me in 15 Minutes and Ignore Limit For Today. Choosing the latter allows them all day access, despite all app limits.

What option have I checked/failed to check that permits this?