In the parent slide topic, include two file objects in consecutive paragraphs, one for each person having the conversation, and then apply the ClickableImage style.
For optimum viewing and scaling on mobile devices, Author-it recommends that each image size be 658 x 524 pixels (width x height). If you use a smaller image, Author-it expands it to that size; if you use a larger image, Author-it scales it to fit. In both cases, aspect ratio is maintained.
Any text in this parent topic will be ignored.
When published, the slide presents the images in the same order as the topics. However, the second image is the person who starts the conversation.