To do Alt + H + A + X + S on Mac in PowerPoint, download and install Accelerator Keys, then press Option, followed by H, A, X, then S.
Command: Stacked
This is how to do Alt + H + A + X + S 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 + A + X + S stacks text vertically, placing each character on its own line while keeping the characters upright. This creates a narrow column of text, useful for vertical banners or Asian language layouts.