How Can I Use the Organizer to Order Books and Chapters

After posting the last Atalanta chapter of book #3 it occurs to me the stories order is not very clear. I found an organizer page that seems to be for Book Title and Chapters. I assume each chapter in the sequence is listed in the body.

But how do I actually move the listings or is it the Book and Chapters that needs moving. Do I tag each chapter entry and it is updated. Do I for example create an Organizer page for Atalanta's Story Book one and in the body list each individual chapter or do I create the Organizer page and open each chapter and tag it with the Organizer Title. Or am I plum off-kilter.

Anyway I hope you all can help me as it seems to me that the organization and order of events appear random.

Thank You

Katie