Full implementation of the Application.MacroOptions
The "Application.MacroOptions" as described but the Microsoft documentation https://msdn.microsoft.com/en-us/library/office/ff838997.aspx does not appear to be fully implemented for Excel 2016 MAC. The argument "ArgumentDescription" that is described in the Excel VBA reference causes a compile error to be raised. How about full implementation of the Application.MacroOptions.
Jon Peltier commented
ArgumentDescription no longer throws an error in recent builds of Excel 2016 for Mac. However, category names are ignored and you must enter a category number, which precludes defining a custom category by name. And in fact, I haven't been able to get my UDFs to appear even in the "All" category.