Cover Image Different than Topic Image

Newbie here. I THINK what I’m trying to do should be quite simple. I want a map on which there are dots for cities and when you click on the City, you Zoom in. At the city level, I would like the topic image to be a state, perhaps even with a dot in it where the city falls.

I’ve tried making the topic image the state and then adding a dot to the cover, but I don’t seem to be able to make it JUST the cover and not have it show up on the page. So, I guess it’s that simple. I would like the cover image to a dot but the topic image to be a state. Doable?
Jonathan

A post was merged into an existing topic: Customizing your topic covers