OK, thanks.
By using a couple of more custom columns, I have it working the way I want it.
Just for info, I added a column called Sort and a column called Genre.
I use the sort to keep an author's books in a certain order. Genre is used to group books by certain genres. By using these, I can set the sort fairly easily for all my SciFi books in a Collection called SciFi, and inside the collection by author, then in whatever order I want for that author.