To do Alt + H + G + P on Mac in PowerPoint, download and install Accelerator Keys, then press Option, followed by H, G, then P.
Command: Selection Pane
This is how to do Alt + H + G + P 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 + G + P opens the Selection Pane, a sidebar that lists all objects on the current slide, allowing you to select, rename, reorder, show, or hide individual objects easily.