The AI image generation tool creates featured images on the fly based on a prompt you provide.

Once enabled, locate the link on the right side in the featured image area and click the link to open the AI image tool.

In the AI image tool, add your prompt in the prompt box then select the generate image button.

A group of images will be displayed in the tool. Select the image you want to use then click the Add button.
This will add the AI image as your article's featured image.

It is important to note that these are not images pulled from the web, they are new images created by artificial intelligence based on the prompt provided.