In case anyone else is having the same issue - the fix is a one line change to either the *winold/control.grd program (if using NOMADS+ or Folder Style) or the *win/proppresets program if using Property Sheets.
If you load either program in an editor - you should see that line 163 defines a variable called prop_both$ that is a long list of properties.
The AUTOCOMPNAME property needs to be added to this list. It does not really matter where - but they are currently alphabetical so we can add it as follows;
(don't forget the comma afterward).
This should allow both the column and row values to be specified.