I just added a handful of macro buttons to my ribbon (using Excel for Mac) in customizing my ribbon. On the Windows version of Excel, when you create or rename the button being added to the ribbon, a symbol / icon palette appears, allowing you to choose the icon you want to appear above the name of the button in the ribbon. That doesn't seem to be the case for the Mac version of Excel. All that appears on the customized ribbon is the text. Am I missing something?