This is a simplicity/noticeability/fewer click request. Very minor.
Currently from a shows main page there is no option, anywhere, to directly edit or even add a pass for that show. You need to go to the passes page to do that. It would be very nice to have a link like the one on the future airings page that provides "Manage Series Pass" or "+ New Series Pass".
Since pictures may explain this better, here are a couple of pictures that show what I am proposing.
Currently We Have This:
I am suggesting something like this:
And something like this if there is no pass: