To do Alt + m a p on Mac in Excel, download and install Accelerator Keys, then press Option, followed by m, a, and p.
Command: Remove Precedent Arrows
This is how to do Alt + m a p 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 + m a p activates the Remove Precedent Arrows command in Excel, providing quick access to this feature from the ribbon.