You can create a blank presentation by following these steps:
Select File, New to display the New Presentation task pane if it doesn't already appear.
Click Blank Presentation on the New Presentation task pane. A blank presentation appears, and the Slide Layout task pane opens.
Choose the slide layout you want to use in your presentation; it will be applied automatically.
Figure 2.11 illustrates a sample blank presentation.
Remember that a blank presentation doesn't include a design template unless you attach one manually.
Caution
Be sure that none of the existing design templates suit your needs before starting with a blank presentation.