According to the BibWord documentation,
For each type of source supported by the stylesheet, a set of important fields can be defined. Those are the fields which are shown by default by Word when adding a new source to a document.
However, in Word 2011 for Macintosh, it has no effect on which fields are shown in the "Edit Source" or "Create New Source" dialogs. What it does change is which fields are marked as "Recommended fields" in the dialogs. I haven't
tested this behavior in other versions of Word.
1) Is it possible to change which fields are shown?
2) If not, could the documentation be changed to "Those are the fields which are marked as Recommended by Word when adding a new source to a document."?