Allow Html tag <embed > for especific URL

Hi, How I can enable send in a form the html tag “” for a especific URL?, when a user send a form, the site response with a block page.
I change the rule “Cloudflare Especial from deny to challenge for embeded content”, but I need for a especific url disable the verification of tag embed, all users send html content to that URL.
Thanks.

Currently only Enterprise plan users can configure different WAF rule setting for each URL:

You have to disable the rule at a global level.

By the way, is this the one triggered by your WAF?