To do Alt + H D D on Mac in Excel, download and install Accelerator Keys, then press Option, followed by H, D, and D.
Command: Delete Cells
This is how to do Alt + H D D 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 + H D D opens the Delete dialog, allowing you to delete selected cells and choose how surrounding cells should shift to fill the gap. You can shift cells left, shift cells up, delete the entire row, or delete the entire column.