Despite what tech support has told me numerous times over the years, PowerPoint's Presenter View is still not supported. I have tried every permutation of screen mode, coherence and setting, but when a genuine second monitor is connected to my Mac running Parallels and I go into PowerPoint's slideshow mode, Presenter View is never available. This, quite frankly, is the deal killer for me. It's the single reason I have spent thousands over the years on PC laptops when I would have preferred to just run and present through Parallels... Please, this is a basic feature that should be available.