To do Alt + N M 1 R on Mac in Excel, download and install Accelerator Keys, then press Option, followed by N, M, 1, and R.
Command: SmartArt Relationship
This is how to do Alt + N M 1 R 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 R opens the SmartArt Relationship gallery to insert diagrams showing connections between concepts. Relationship SmartArt includes Venn diagrams, radial diagrams, and other layouts for illustrating how elements relate to each other.