Changing the default banner image on a process brings life to the page and can be a great way to help constituents better understand what a particular process is for.
To change your banner image, first visit the public-facing process launch page for a template. You can find it by clicking "Get started" from the template page and copying and pasting the link into your browser or by hitting the blue grey button to copy the URL to your clipboard then just paste it into your browser address bar.
Once on the public-facing process page, hover over the default banner image and click the button that says, "Change banner image."
Select an image to upload and you're good to go!