Hazel v 4.1.1 Help file

Have just upgraded to 4.1.1 and according to the release notes there is a new "in-app help/manual". I didn't even know there was an old one. My question is, how do I access the in-app help. I've tried the question marks at the bottom of the window, but they are just bog standard Mac help icons and don't link to anything.

Can you email in to support? Include the version of macOS as well as the language your system is set to.