You can easily change the design template originally applied to your presentation. To do so, click the Design button on the Formatting toolbar. The Slide Design task pane appears, displaying all available design templates in preview format (see Figure 6.6).
The existing design template used in the current presentation appears at the top (if there is one), followed by the most recently used templates, and then all other available templates.
Select the template you want to use. PowerPoint applies this new design to your presentation.
Not all design templates are already installed. If PowerPoint displays a warning that ...