Insert a Section break at the end of each section, where you want the header to change.
Click in the body of the first page od the new section. Open the Insoector.
In the Inspector, click the Layout button (second from left), then choose section.
Uncheck the box labeled "Use previous headers and footers"
Click in the header and edit to show the new header text and calculated values.
I am going through the same process as Keith
I want left header (title of book) right header (chapter title)
I have sorted as above going into layout / Section and clicking left and right pages are different
BUT when applied it removes the left had page numbers in the footer
How do you ensure that the page numbers do run across the section left and right?
many thanks indeed
Good advice from Fruhulda.
I don't have Pages 5 installed, so this response may be accurate for only earlier versions.
Whn you specify that left and right are different, you may have to rebuild the headers and footers on ither the left or right page.
For your case, go to a left page footer, then go Insert > Page Number (in the footer). Position as desired.