I just downloaded the latest Hitfilm 3 Pro and immediately went over to the YouTube export settings. Hooking up my personal account was a breeze! Thanks for that.
I was then hoping to also hook up my business YouTube account, since there's equal likelihood that I'd submit an edited video there.
There doesn't seem to be a way to add more than one YouTube account but that would be a cool feature, I think. It would be useful for me, anyway.