Author the web map, or two web maps, that you want your story map to display. This includes adding the data you want to show, choosing the symbols for the map, and configuring pop-ups for any feature layers that you want users to be able to click to get more information when they use your story map. If your story map will use two web maps, you don't need to make the extents shown in the maps identical because the Swipe and Spyglass app automatically overlays the two maps together so their extents are the same. Save your web map or web maps.