Use the page axis to specify combinations of members that may span dimensions so users can work with data in smaller, logical views. Each item on the page axis can have members selected from one or more dimensions. Users see only members they can access.
You can specify multiple page drop-down lists, and select members using relationship functions or attributes. Switch between member sets by selecting them from the page axis.
You display member names or aliases on the page axis. You can specify the number of members in a page dimension that enables a search drop-down list on the data entry page, useful if dimensions contain many members. See Defining Simple Form Page and Point of View.