I have two custom post types "Product" and "News". I want to keep a description that describes each of these types and I want to display it under the custom post title inside a banner. Also the user should be able to change it from admin dashboard. That means when I go to products page, there is a banner on top of the page and the title will be PRODUCTS and then product description should be displayed.
Now if I can add a meta box common to the product cpt which has an input field, I can display it on the web page. But I only know how to add meta boxes to each products under product type.
How do I solve this?