How to view comments/footnotes on the right side of screen?

How do I view comments and footnotes on the right side of the screen like this: … ivener.png

Thanks! I’m trying to follow this tutorial:
and it’s driving me nuts.

  1. Buy a mac, buy Scrivener for Mac.
  2. Travel to the future, when the Windows version has implemented this feature.

In another thread, Keith noted that this feature is being worked on actively, but there was no timeline specified for when it would be available, which is the norm: they rarely give themselves deadlines, instead opting to make sure that a new release is done well.