Guides form a moveable grid on your slide that can be altered — multiple guides can be added or deleted as per the design requirements of your slide. We have already explained how you can make guides visible on your PowerPoint slide, and how you can add multiple guides. Guides have snap options turned on by default — so you cannot turn snapping to guides on or off. Once the guides are made visible on the slide, all objects that venture close enough to them snap. Along with rulers, guides can help you position your slide objects with more precision.
Learn about how guides can help you in aligning your slide objects in PowerPoint 2011 for Mac.

