With the first button designated as "next page", send that button to a Loop Counter, and then the output of that to a few comparators, one for each page. The outputs of these comparators become your "EnablePage1", "EnablePage2", etc. signals. Feed these signals to your button logic and to your screen areas. Create multiple screen areas, one for each page, then create associated "Define Screen" pages, one for each area.
Depending on your preferences and screen layout, you might also want to make a common footer in a separate screen area that indicates the button functions. I tend to do this so the all-important user prompts are in one place, to reduce redundant code, and to help ensure that the user always sees something above the buttons, just in case a bad page doesn't show what it is supposed to.