You can add multiple themes to the report. In this case, the report renders a combination of multiple outputs for each theme. For example, if a report has two themes, then the report output includes a combination of the first and the second themes, applied to each report page. You can control the combination rules of the report output in the CollateBy property.
You can control the page order of a rendered report with multiple themes by selecting the collation mode in the CollateBy property of the report:
See Add Page Numbering for information on setting cumulative page count formats for Page Report.