Rehearse Timing Lets you set slide timings to be used during an electronic slide show. When you use the rehearsal feature, PowerPoint keeps track of the amount of time each slide is on the screen and sets the time accordingly. To see the results of the transitions and builds Play the slide show by selecting the button at the bottom of the screen that looks like a mini-TV with lines on it. Make sure you are at the first slide in the slide sorter screen. The slide show will start playing from wherever the cursor is located.
Saving Be sure to save often and keep updating and saving.
Direct questions regarding this information to the University of North Texas HelpDesk staff.