How do I add "Watch Now" button" for my IMDb listings I manage?

Current the movie is just on Prime, they're working to get it on other sites. I don't see any option for this? The IMDb listing is: https://www.imdb.com/title/tt29793631/?ref_=ttfc_fc_tt Amazon listing is (was just added is: https://www.amazon.com/placeholder_title-John-Doe/dp/B0CPPR4735/ (not sure why URL looks like a place holder but guess it's bc it's just been added).