Thanks, I tried to better explain my question in a reply below
I haven't delved too deeply in the creation of books. This document seems to indicate that it is possible to auto-update the page numbers across the various documents (section 'Number pages, chapters, and paragraphs in a book'):
You may need to also look at the 'Synchronize book documents' section too
If you still have difficulties, could you give as much details as you can, and I'll try to take a look.
I'll try and if no to function I ask again. Thank you until now.
And... I am sorry for my English. My native language is Portuguese and I only learn English still..
Well, doesn't it do so automatically?
Three things to watch out for:
1. InDesign cannot see from a single open document that it is used elsewhere in a book. It only knows this when you also have the Book document open.
2. None of the documents must have the page numbering "Start Page Numbering At (xxx)". (Unless you want it to.) Leave it set to "Automatic Page Numbering" so ID can adjust it when necessary.
3. And of course, you must have "Automatically Update Page & Section Numbers" enabled in the Book Page Numbering Options.
The files and book was make for other people and now I am responsible for him.
Sincerely, I am learn about InDesign still and not worked with the program previously. Thanks for help.