To do Alt + H O M on Mac in Excel, download and install Accelerator Keys, then press Option, followed by H, O, and M.
Command: Move or Copy Sheet
This is how to do Alt + H O 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 + H O M opens the Move or Copy dialog, allowing you to move the current sheet to a different position in the workbook or copy it to create a duplicate. You can also move or copy sheets to other open workbooks.