Slide Master

Hi Amy

Thank you for your question; and welcome to the forum.

You can preserve a slide master by right-clicking on the master slide you want to preserve; and choosing Preserve master from the shortcut menu.

This will mean that when you are looking at your presentation, you will be able to apply the design for the master you preserved from the Slide Design task pane (Format - Slide Design).

I hope this helps.
Amanda