How do I merge two presentations?

The best way to copy slides from one presentation to another is to to insert them using the Slide Finder dialog box (Insert menu, Slides from File command). In this dialog box, you can select the slides you want without having to open the presentation, and you can also include paths to presentations you often copy from by adding them to your List of Favorites.

In the Slide Finder dialog box, browse to the presentation with the slides you want to use.

If you only want some of the slides, select those slides.

To retain slide formatting, make sure that the Keep source formatting check box is selected.

Click Insert for selected slides, or Insert All to insert all the slides from this show.

By default, a copied slide inherits the design of the slide you insert it after in the presentation you copy it into. You can choose to keep the formatting of the slide you're copying when you copy it, instead.