It’s a FAQ. Let them read this doc:
All you need to know is:
- You should read the HTML source code of your target web page to find if it uses
<iframe>
or not. - To read the HTML source, you need to be familiar with browser’s DevTools
- If the HTML employs any
<iframe>
elements inside which you want to select HTML elements, you need to use [WebUI] Switch To Frame | Katalon Docs keyword.