Use left and right arrow to change slide in that direction whenever canvas is selected.
Slide 1: Click on <>Embed

Click on the Embed feature at the bottom of your content.

screenshot that highlights the Embed option at the bottom of the image

Select and copy the iframe URL.

screenshot demonstrating the pop-up window with the iframe URL to copy.

Copy the iframe URL from the pop-up display.

Slide 1 of 4