To do Alt + H + 2 on Mac in PowerPoint, download and install Accelerator Keys, then press Option, followed by H, then 2.
Command: Italic
This is how to do Alt + H + 2 on Mac in PowerPoint with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with PowerPoint.
Alt + H + 2 toggles italic formatting on the selected text. Italic text appears slanted, commonly used for emphasis, titles, foreign words, or citations in your presentation.