@maryandrews -- It's not there yet, but we are working towards it. There are several other pieces of this that we need to add first. For example, last month we added the ability to link to headings in a story. Now we're working on the next step, which is to expand that capability to subheadings. After that we'll work on adding links for tour stops. I think it should be available sometime in Q3 of this year, but we don't have it planned for a specific release at this time.
One thing to note is that links will not be available for data-driven tours (that is, tours created from an ArcGIS feature service). This is due to a technical limitation to how those types of tours work.
Owen Evans
Lead Product Engineer | StoryMaps