To do Alt + M A on Mac in Excel, download and install Accelerator Keys, then press Option, followed by M, A.
Command: Remove Arrows Menu
This is how to do Alt + M A 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 opens the Remove Arrows dropdown menu in Excel’s Formula Auditing section. This menu provides options to remove all tracer arrows, remove only precedent arrows, or remove only dependent arrows that were created using the Trace Precedents or Trace Dependents features.