Hello @User_NT
As a general rule, when performing web automation with RPA tools such as PAD, you are basically processing the HTML elements and attributes that make up the web content.
Therefore, even HTML elements that are not displayed on the screen (hidden / invisible) can be considered as possible target for automation.
But of course, if the target is not visible, you will not get help from tools such as UI element capture or web recorder, so you will need enough knowledge of HTML and CSS selectors.
Well, I think it is safe to say that it is usually impossible (or very difficult) to automate using information that is not displayed on the screen.
Thank you and good luck.