[itsme]

In fact you can add the page numbers to the title format or the caption format (the second line below the title): %PAGE_ORDER% is the keyword you are looking for. You have to type it on the keyboard, it is not on the selection buttons.
But it won't help: %PAGE_ORDER% refers to the MSP database entry which refers to the PDF page within the PDF file. In your case this is always =1 as your scanned title page is always just one page. The page in your paper books is something different. So your idea to use a custom field is the way to go.

To read more about %PAGE_ORDER% see http://zubersoft.com/mobilesheets/forum/...p?tid=3441