I have a custom post type where I have testimonials which are all grouped by 6 industries (meta value).
On the post type archive page I would need to show the last testimonial from each of the 6 industries. So 6 posts in total all from different industries.
I could create another meta box where I can "archive" old testimonials but this would require the client to always remember to archive when publishing a new testimonial.
How can I do this so it's automatic? I've been trying to think of a solution but need some help!