Click the View tab, and then click the Slide Master button.
Click the master. A push pin appears under the slide master number to indicate the master is currently preserved.
Use the Preserve button to toggle it on and off.
Click the Close Master View button on the Ribbon.
3.6.Slide Master | ||||
3.6.1. | View the Slide Master | |||
3.6.2. | Delete a slide master | |||
3.6.3. | Rename a slide master | |||
3.6.4. | Insert a New Slide Master | |||
3.6.5. | Preserve / Not Preserve a Slide Master | |||
3.6.6. | Create a New Slide Layout from an Existing One | |||
3.6.7. | Include an Object on Every Slide or Only Specific Slides |