To do Alt + N M 1 M on Mac in Excel, download and install Accelerator Keys, then press Option, followed by N, M, 1, and M.
Command: SmartArt Matrix
This is how to do Alt + N M 1 M 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 M opens the SmartArt Matrix gallery to insert grid-based diagrams. Matrix SmartArt displays information in quadrants, useful for showing relationships in a 2x2 grid format like priority matrices or SWOT analyses.