Many users are familiar with keyboard shortcuts for PowerPoint 2019 for Mac, yet there are no real shortcuts for tasks users need to perform all the time. This includes inserting sections, comments, or even SmartArt or aligning or reordering slide objects. Unlike in Windows versions of PowerPoint, where you can quickly press the Alt key to access the menu or even the Ribbon tabs, the Mac versions of PowerPoint provide no equivalent feature. However there is an alternative, and you can learn how to invoke keyboard sequences by accessing your menu bar in PowerPoint 2019 for Mac.
Explore Keyboard Sequences in PowerPoint 2019 for Mac.