Sections can be useful not only while managing your presentation slides, but also for quickly reordering large blocks of adjacent slides. All you need to do is place all the required slides within a single Section, and then move the entire Section — and all the slides within that Section will be moved to a new position at once. Follow these steps to learn more about reordering Sections in PowerPoint 2011.
Learn how to reorder Sections in PowerPoint 2011 for Mac.