To specify the time before the slide advances, select the After check box, and then type the number of minutes or seconds that you want into the associated text box. Note To use the specified timings, on the Slide Show tab, in the Set Up group, make sure that the Use Timings check box is selected.Top of Page.elect the slide that you want to set the timing for. On the Transitions tab, in the Timing group, under Advance Slide, do one of the following: To make the slide advance to the next slide when you click the mouse, select the On Mouse Click check box.