Screen Time: how can I disallow bypassing limits? It's too easy for me to click on those "one more minute" or "15 minutes" Screen Time bypasses.

Is there a way to really really block apps and websites and not being allowed to bypass the limit at all (unless going to settings etc.)?

I thought at some point there was a way but I cannot find it anymore.
Require a Passcode to bypass Screen Time limits:

Settings &gt; Screen Time &gt; Use a Screen Time Passcode

Once this is set, you will need to enter the passcode to bypass the limits. Arrange so that you do not have access to the passcode and you will not be able to bypass the limits.