You can apply page transitions to individual spreads or to all spreads to the document. Page transitions appear when you export and In Design document to PDF or SWF format. You cannot apply transitions to different pages within the same spread or to master pages.
In the Window panel, select the Pages. Make sure the spread is selected, not simply targeted. The numbers below the pages in the Pages panel should be highlighted.
To display the Page Transitions panel, chose Window > Interactive > Page Transitions.
Choose a Transition from the Transition menu.
To apply the selected transition to all spreads currently in the document, click the Apply To All Spreads icon, or choose. Apply To All Spreads from the Page Transitions panel menu.
To preview the page transitions, export the document either to PDF or SWF format.