I have followed the standard solution provided by Microsoft support to do this, and it only works if the page numbers is in the footer.
The form I am trying to build requires the page of page concept to exist in the Page Header Section. Not in the footer sections. So by moving the following Text Box around between Footer and Header it works or fails.
=[OrderNo] & " - Page " & [Page] & " of " & [GroupXY]
How would I modify the code to allows this to work on the Header instead? testForm.mdb