MS Defender setting

Hello, I have a question.

I'm not an English-speaking country, so please understand any shortcomings.

I'm trying to block or alert on specific URLs in Microsoft Defender > Settings > Endpoint > Rules > Indicators. I've completed the setup, but I'd like to customize the screen that appears on the webpage when an alert is triggered.

Is there a way to do this?

Thank you in advance for your help.