NAV 2013 - Manufacturing Batch Unit of Measure Column - Does not exist as an option in Units of Measure Window

Hi,

I want to customize the Units of Measure window to include the column for a Manufacturing Batch Unit of Measure Code (per the instructions as to How to Use the Manufacturing Batch Unit of Measure).  The Help files in NAV 2013 indicate to go to the Units of Measure window, open the shortcut menu for the column headings, and then find this column as an option on the list to add to the table.  However 'Manufacturing Batch Unit of Measure Code' is not a column option.  What am I missing?

Thanks,

Alan