1. Start PowerPoint 2013 and open the presentation, click the slide in the Slides pane to specify where you want to insert the slide, and then on the Start tab, in the Slides group, click the Lower triangle button on the new Slide button and select the Reuse Slides option in the Open Drop-down list. As shown in Figure 1.
Figure 1 Selecting the "Reuse slides" option
2, you will open the Reuse Slides pane, click the Browse button, and select the Browse for File option in the Open list, as shown in Figure 2. The Browse dialog box opens, selects the presentation that you want to use the slides in, as shown in Figure 3, and then clicks the Open button to close the dialog box.
Figure 2 Selecting the Browse for File option
Figure 3 Selecting a presentation file
Note: When you click the Browse button in the Reuse Slides pane, the Browse Slide gallery option in the select list opens the Select Slide Library dialog box, which opens the PowerPoint default Slide Library folder "C:" Usersadministratorappdataroamingmicrosoftpower point my Slide Library, the user can choose to use the slides in it.
3. Click the Open button and all slides in the presentation will be listed in the Reuse Slides pane. Check the Keep Source Formatting checkbox at the bottom of the pane, and position the mouse pointer over the slide thumbnail in the pane, which shows the outline of the slide content, as shown in Figure 4. Click the slide thumbnail in the Reuse Slides pane to insert it into your presentation.
Figure 4 showing the slide content outline