I would like to shape this thing from 2001 A Space Odyssey, it's a connector to pressurize the suit
I began to add a cylinder, inset the top face, extrude it but now I don't know how to bevel it to make it rounder like in the picture above
Sorry I couldn't find a better quality pic from this connector in the movie.
EDIT : here's a gif of my issue, I followed Sander's instructions but it results in that (as you can see, it doesn't bevel at all, but it bevels right if I try on a simple cylinder edges) :
Thank you for your help :)