When creating your presentation, you can add new slides, move your slides around, and delete any slides you don’t need.
Add a new slide
In Normal view, on the left slide thumbnail pane, click the slide that you want your new slide to follow.
On the Home tab, click the arrow next to New Slide.
In the gallery of layouts, click the layout that you want for your new slide.
Rearrange the order of slides
In the pane on the left, click the thumbnail of the slide that you want to move, and then drag it to the new location.
Tip: To select multiple slides, press and hold the Command key while you click each slide that you want to move, and then drag them as a group to the new location.
Delete a slide
In the pane on the left, CTRL+click or right-click the slide thumbnail that you want to delete, and then click Delete Slide.