Try under the "Help" menu...I didn't check on v0.11.0 but that is where it has been on earlier versions.
That's the thing though, there is no menubar on the Mac GUI, just the send/recieve/transactions/overview tabs. I think I have to use the OS X console.
Im not entirely sure what its called, but yes the top bar that is on windows and most linux system directly attached to each of the windows is at a different place for MacOS and some versions of Ubuntu.
MacOS:
Its at the top of the screen if bitcoin core is active.
Sorry for the potato quality, I have no Mac and problems to get an install image from a safe source for it to run on a VM.