we'd like to have OpenX manage some ad banner type that consists of a leaderboard and a medium rectangle banner (an example would be here in the top right corner: https://www.sevenonemedia.de/image_gallery/12/07/37/1207370.jpg). From my understanding the leaderboard and the medium rectangle are configured as two different zones. So how do I link these two zones in OpenX so that both banners always show the same campaign?
Best Regards, sparafucile