Select text iFrame in the popup provider.
In the General tab:
- Copy and paste the URL of the webpage you want to display in the video
- Loader option: if you activate it, a loader picture will appear after the delay (in seconds) that you will have specified. This is useful to make the viewer understand that something is loading in the popup.
You can also add a block of text and an action button (see the text popup to get the explanation).