How to customize the Presentation background

To customize the Presentation background, perform the following steps:

1. Open the slide of the Presentation document that you want to modify, and tap the toolbar icon in the lower-left corner.

2. In the expanded toolbar, tap Design, and then tap Select from album.

3. Select the background image that you want to insert, and crop it to the right size.

4. Tap Crop in the lower-right corner. After that, the inserted image can be used as the background of the document.