I am making a Story Map Series for a competition in my high school GIS class. I would like to have two layers, as in you select one tab and then within that tab, you can click through other maps within the tab. An example is: https://noaa.maps.arcgis.com/apps/MapSeries/index.html?appid=d9ed7904dbec441a9c4dd7b277935fad
Here, you can choose the place, then options within the location. I would like to do the same, yet can't find a tutorial. Any and all help is appreciated!