How to add captcha from Google Recaptcha 2 to 2 forms on Bitrix?

Question

1C-Bitrix

There is a site on Bitrix, it has 2 forms. One in a pop-up window on ajax, the other html without ajax.
For the ajax form, a self-written component of the component.php file is not in it.
It is not possible to add captcha, it is displayed, but the verification does not work.
How to add captcha Recaptcha 2 from Google to 2 forms on Bitrix?
How can I prevent the form from submitting when clicking on the Submit button if the captcha is not passed?

Answer 1

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