To do Alt + M E on Mac in Excel, download and install Accelerator Keys, then press Option, followed by M, E.
Command: Date & Time Functions Menu
This is how to do Alt + M E 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 E opens the Date & Time functions dropdown menu in Excel’s Formulas tab. This menu contains functions for working with dates and times including TODAY, NOW, DATE, YEAR, MONTH, DAY, HOUR, NETWORKDAYS, WORKDAY, and other temporal calculations.