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.