Earlier quoted context omitted.
You know abhout this "drag and drop" thing? Open up the Displays preference pane. You see the two (or more) screens and you can drag them around to decicde how to arrange your virtual desktop. Now drag the menu bar to whichever screen you like. And remember, Google is your friend.
Ah, didn't realize that you could drag the menubar separately.
In your defense, a lot of "elegant" GUI designs are like this: they lack affordances, so you have no idea that they can be manipulated. But once you learn them, they seem to make sense.
The common alternative, some sort of configuration wizard with 1,000 controls, seems worse. But only just.