[goodreader16]

I'd like to set Calibre to sort my books in folders first by author (1 folder for each author), then by series (1 folder for each series by that author) and then by either series # if part of a series or just by title if not part of a series. But I cant figure out the template formula to use. Currently mine is set to:

{author_sort}/{series}/{series_index}/{title}/{authors} - {title}

and all it does is sort by author and then title. I've obviously messed up something. How do I adapt this to also sort by series?

TIA