In the overview page you can select pages 1-14, 15-28 and the cue page by tapping the buttons on the right of the screen.

When you have selected a fixture you can switch between 1-14 and 15-28 by tapping the button in the top right corner.

In a multi selection there is a bar at the top of the screen with 28 squares. These squares represent the 28 fixtures, this gives you an overview of the selected fixtures (blue is selected). You can switch between 1-14 and 15-28 by tapping the bar half or the button on the right.