When you insert a chart, the position of the Chart Area on the slide depends upon the layout of the slide. If your slide layout is Blank, then the Chart Area is located at the center of the slide. If the chart is inserted within an existing placeholder on the slide, it occupies the entire placeholder. To reposition the Chart on the slide, you can either just select and drag it to the new position on the slide, or reposition it accurately as explained in this tutorial. This tutorial will also teach you to how to add alternative, supporting text to the chart to help people with visual disabilities.