To do Alt + H I on Mac in Excel, download and install Accelerator Keys, then press Option, followed by H and I.
Command: Insert Menu
This is how to do Alt + H I 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 I opens the Insert dropdown menu, giving you quick access to insert Cells (I), Rows (R), Columns (C), Sheets (S), or Copied Cells (E). This is the fastest way to add new elements to your spreadsheet without using the mouse.