To do Alt + H + A + C on Mac in PowerPoint, download and install Accelerator Keys, then press Option, followed by H, A, then C.
Command: Center
This is how to do Alt + H + A + C 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 + C centers the selected text horizontally within the text box. Center alignment is commonly used for titles, headings, and single-line content on slides.