Such headers/footer cannotīe accessed unless there is an intervening page break or long text causes a change of page within such a section. They can have their own set of headers/footers, odd/even and different first page (although the latter won't ever display).
To force a new page, many users insert section breaks instead of page breaks, creating havoc. Some headers/footers, the unused information remains, it's just not displayed. If the new section no longer has an odd/even pagination, or has only one or two pages and cannot display You can have the same footer, yet a different header.
According to what you describe, you don't need this feature.
