HMR

Hello, hoping someone can help me with the same issue. I use 7.0 for one nonprofit and 7.1 for another nonprofit. I am not a coder, just a volunteer helping out. They like how the blog articles in 7.1 have a photo in the header on this site: https://www.anglicandoma.org/messenger-articles/always-forward But I am reading over and over again that it is impossible to do that in articles in posts in 7.1. Their website uses an additional section to add the photo to their headers on the other pages, for example: https://www.somausa.org/history Is there absolutely no way possible to do this in 7.1 blog articles? Thank you! Heidi