Adding new content to your article is easy. Just click any of the content capsule buttons to add that capsule to the bottom of your article. Each capsule includes an optional subtitle. Subtitles help make your content more easily scannable and are an important consideration for search engines, so make sure your subtitles are clear, descriptive, and directly related to subject of your article.
Once you've added some capsules, you can move them around using the directional controls on each capsule, or just drag them around in the Organize Your Content section on the right side.