When you have multiple pages in your screener, dragging questions can take forever, so there are a couple shortcuts to move a question a different page or to change the order of pages. Here's how you do both:
Moving a question to a different page
Rollover any question and look for the page icon, when you click it you'll be prompted to choose the new page number you'd like to move that question to. It will be placed at the bottom of that new page.
Changing the page order
To move an entire page, you can click the small up or down arrows at the top right of any questions page. After clicking, there will be a confirmation since moving an entire page can change your screener quite a bit.