To do Alt + P S Z on Mac in Excel, download and install Accelerator Keys, then press Option, followed by P, S, and Z.
Command: Size
This is how to do Alt + P S Z on Mac in Excel with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with Excel.
Alt + P S Z opens the Size menu to select the paper size for printing. Options include Letter, Legal, A4, and other standard paper sizes, allowing you to match your print output to your available paper.