To do Alt + H + T + 1 + O on Mac in PowerPoint, download and install Accelerator Keys, then press Option, followed by H, T, 1, then O.
Command: Collapse All
This is how to do Alt + H + T + 1 + O 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 + T + 1 + O collapses all sections in the slide panel, showing only the section headers. This provides a high-level overview of your presentation structure and makes it easier to navigate between sections in large presentations.