To do Alt + N M 1 P on Mac in Excel, download and install Accelerator Keys, then press Option, followed by N, M, 1, and P.
Command: SmartArt Process
This is how to do Alt + N M 1 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 + N M 1 P opens the SmartArt Process gallery to insert process diagrams. Process SmartArt shows sequential steps or stages in a workflow, task progression, or timeline with arrows and directional flow.