Set as main video

http://imgur.com/a/KzkCS

I have a button to add videos…

I meaning we can't set a new trailer as main video on main page of the series. I uploaded a new trailer to Made in Abyss, but can’t set this trailer as main video.

It isn't there because there is very little value in having more than one trailer for the same episode here. If the new one is undoubtably better than the old one, I think the old one could just be deleted.