To do Alt + H + A + R on Mac in PowerPoint, download and install Accelerator Keys, then press Option, followed by H, A, then R.
Command: Align Right
This is how to do Alt + H + A + R 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 + R aligns the selected text to the right edge of the text box. Right alignment is useful for dates, page numbers, or creating visual contrast in your slides.