I am preparing a manuscript for private publication. All notes have to be endnotes, at the end of the book (not at the end of each chapter). I am unable, however, to place the glossary and the index after the notes--the "insert page break/insert section break/insert blank page" are all greyed out. I get a message that I cannot insert breaks in the notes section. And I cannot create a new section behind notes.

Clearly the index has to be after the notes, and the glossary should be after the endnotes as well. What am I doing wrong?

Thanks in advance, for any guidance.