Custom Page: Add image to page to help user know what form fields relate to what pages

[kasugaijin]

Log in as staff and go to the dashboard > custom page This form is a little hard to understand for a first time user i.e., which fields update which parts of the website. So adding images will help until we can refactor this design further.

• Please add the assets like below (get them from the custom page section on Figma). The assets are in multiple layers e.g., image + text but this would be good to just export as a single layer (screenshot if you must) so it is a single image in each case.
• For mobile, the images should stack below the form.
• The save button should say 'Save' only