Click the Slide Show tab. Click the Custom Slide Show button, and then click Custom Shows.
Click the show. Click Edit.
To add a slide, click the slide in the Slides and then click the Add button.
To remove a slide from the show, click the slide in custom show list, and then click Remove.
To move a slide up or down in the show, click the slide, and then click the Up Arrow or Down Arrow button.
Click OK.
Click Close.