How to embed a registration form from one site to another?

Question

JavaScript

Hello!
Tell me how to embed the registration form from the site - https://events.webinar.ru/2042225/124421a (there you need to click on the "Register" button to make the form appear) on my Wordpress site?
And is it even possible?
It would be even better to "mount" this pop-up window to me. I'm not a programmer so I apologize for the terminology)

Answer 1

The first thing I found in the search engine
is actually a popup/modal window. I think there are a lot of wp plugins out there.

Answer 2

There was information that this can be done through an iframe, but how to make only a pop-up window in an iframe, where the necessary fields are, and not the entire site?

Answer 3

Send a post request to this site with these details:

1. name(Name),
   
2. secondName(last name)
   
3. email(Mail)
   
4. nickname(Empty field)
   
5. referrer(Empty field)
   

<form action="https://events.webinar.ru/api/events/337699/registration" method="post">
  <p>Имя: <input type="text" name="name" /></p>
  <p>Фамилия: <input type="text" name="secondName" /></p>
  <p>E-mail: <input type="email" name="email" /></p>
  <input type="hidden" name="nickname" />
  <input type="hidden" name="referrer" />
  <p><input type="submit" /></p>
</form>