Set Banner for Parent Category and all sub categories
I am trying to upload a default banner for each ad category. However, I am noticing that If I want to use the same photo for the parent and subcategories, I have to go though each one individually to upload a new instance of the photo since it doesn't give me an option to choose an existing photo in the media gallery. Is there a way to have the photo I select be the default for the category and all subs, or better yet, a photo for all ads across the site since I don't like the users choosing their own banners. Their photos don't come out appealing. (I did find the code here to disable users from choosing a banner image but it still says "set pictures as thumbnail" which is confusing.
Thank you for the help.