Creating a Master Slide
If you work for a company, you may be asked to prepare long presentations periodically. Theses creations can have all types of slides, but usually the company wants them all to have the same overall look.
To make all slides in a presentation have the same design elements, create a master slide. This slide contains information about the elements you want on every slide in a presentation, such as the company logo, background, and font color.
Having a master slide eliminates having to format every slide in a presentation with the same basic design and text.