If the document is part of a book, open the book
and select the document in the book window.
Choose Format > Document > Numbering.
Select an option from the drop-down list.
Set the options.
Note: If a book window
was active when you opened the dialog box, you can select Read
From File, which uses the numbering value specified
in the associated document. If you selected more than one file in
the book window, you can select As Is to
use the numbering values specified in the selected documents.