Here's a quick example on how to add AI pictures to photo holders in Page Designer

To modify an existing Page Design, double click on it (we recommend duplicating it first).

Now you can double click any photo holder

After double clicking on a Photo Holder you'll see the new AI options

The Select AI Mode will allow you to show the Original picture, the original square "Processed" picture or the AI processed one. 

You can take a new picture for each AI prompt/photo holder or check the Repeat Photo Holder box and use one picture as the base for the AI prompts to process.