To do Alt + J I I S on Mac in Excel, download and install Accelerator Keys, then press Option, followed by J, I, I, S.
Command: Ink to Shape
This is how to do Alt + J I I S 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 + J I I s converts hand-drawn ink into clean geometric shapes. Draw a rough circle, rectangle, arrow, or other shape, Excel will recognize it and convert it to a polished, precise shape object that can be further formatted and resized.