The directions in
http://manual.calibre-ebook.com/faq.html#id34 are too complicated for me.
When I copy the contents of "Author sort" edit box (LN, FN) into the "Author(s)" edit box (for all library records). After that I sort on Author(s) Ascending and the result is that I see a list of Authors displayed as LN, FN.
I think most people select a book from a library by scrolling in a list displayed as LN, FN.