There are two ways of presenting images in the story. The first is adding them individually - then they appear one after another.
You describe each image separately and, if you need it, add a dedicated URL link. The second is to create a standard gallery - then the pics will appear as thumbnails next to one another under the first image from the gallery.
At you add photos as gallery, you can determine if you prefer your photos to be changing manually (when viewer clicks on an arrow) or automatically - as a slider.