I've got a custom post type of product and one of case study.
Each product has a series of related case studies. How in Wordpress can I relate these items?
I'm using CMB2 and a custom multiselect field that allows the user to select the related product for a case study. However, I'm not sure if this is the best way.
Also the page that lists all the case studies for a particular product is very much like an archive page so it would be nice to be able to access it via