Slide Master helps make your formatting (background, font, etc.) the same throughout your presentation, without having to change it on every slide. Having consistent formatting throughout your presentation gives it a more professional appearance. Also, when you have a lot of slides in a presentation, using the Slide Master will save you LOTS of time. So, with that said, here is how you can use it.
- Click on the View Tab on the Ribbon
- Then click Slide Master
- There you can make all your formatting changes and it will apply these changes to all your slides and to any new slides you create