Whenever you need to update a book in your table of contents, you change its properties. You can make changes to the title, destination, book type (with or without links, use of information types), and target topic. Additionally, you can assign or unassign a custom window or frame and change the book icon displayed at the Contents tab.
To change a book:
Click the TOC tab.
Right-click the book and select Properties.
Use the options that are available from the General and Advanced tabs to update the book.
Click OK to save the changes.