How to add an on and off image to a PowerPoint presentation on January 25, 2021, 9:57 AM PST With two simple Mouse Over action buttons, you can create a fun on-and-off effect in a Microsoft PowerPoint presentation. Image: iStock/gorodenkoff There are several on and off states—true/false, open/close, yes/no, and so on. Thanks to Microsoft PowerPoint's Mouse Over action button, moving from one state to another, seemingly without moving to a new slide is easy. In truth, you do need two slides, but the audience won't realize it. In this ar...