On the Nominee these, it seems I can only change the page header image only. I’ve been trying to change the other images, within the page, for example on the Home-Front Page, I want to change the banner  image below “Get Update Via Newsletter” towards the bottom of the page and on that page there’s also the one that looks like it’s from the Obama-Biden campaign. There are a lot of these images, that I’d like to change but can’t figure out how to do it. 
If you guys had a way to upload screenshots that would also be helpful so you can see what I’m referring to.
 
Thanks for you help