When I scan a multi-page document, only the 1st page appears in Quick Image Navigator. There's only the first page in the preview thumbnail, and the [previous page] and [next page] button/icons are grayed out.
Theoretically, you should enable multi scan feature in the application to be able to be able to scan multiple pages. However, I recommend to simply download the tutorial page to see how to properly scan a multi page document.
Download tutorial: ftp://18.104.22.168/pub/Panasonic/business/office/op_manuals/op_man_printer_multi/OM_DP-C322_C262_QImageNav.pdf
Note: In the Editing Page chapter you can see how to properly scan to multi plages. Only PDF and TIFF files allow you to do that.