Need help setting up rule to block auto discover requests

Website, Application, Performance
1

I found the article with the expression but don’t know where to input that expression to retrieve the desired action

4

Welcome to the Cloudflare Community. :logodrop:

Would you share article so we can better understand what you wish to accomplish?

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6 
https://developers.cloudflare.com/firewall/recipes/block-ms-exchange-autodiscover/
7

Have you followed these steps?

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