A chart layout is a predefined combination of chart elements such as legends, titles, and so on. You can easily change the layout of your charts in PowerPoint 2013. Microsoft studied thousands of charts and talked to chart experts to come up with galleries of the most common layouts for each chart type.
To change the layout for a chart, follow these steps:
Click the chart to select it.
The Ribbon expands to include the Chart Tools tabs.
Click the Design tab on the Ribbon. Click the Quick Layout button.
Doing this opens the Quick Layout Gallery.
Click the layout you want to use.
The layout you select is applied to the chart. Changing the layout changes the appearance of a chart.