How do I hide the top menu while in presenter mode of PowerPoint?

I am a teacher who recently switched to Mac. Though I love Keynote and make many of my new lessons with it, most of my old lessons are still PowerPoint files. I am annoyed that when using a second screen in presenter mode, the top menu hides on my screen (with the notes, next slide, current slide, etc.) but is permanently at the top on the second screen that displays for my students. I wouldn't care about having on my screen, but it is useless and distracting in the second screen. How do I get rid of it?