Any element of a chart that you can insert, you can also format.
In some cases, as mentioned earlier, you can format a chart element directly. For example, you can select text in a title and apply font formatting to it. You can also move elements, such as your chart's legend or plot area, by dragging them with the mouse.
However, in most cases you'll work with dialog boxes to access the formatting controls you need. To format a chart element, double-click on it; or right-click on it and choose the format command that appears at the top of the shortcut menu.
For example, if you right-click on your chart's title, the Format Chart Title command appears, and if you select it, the Format Chart Title dialog box appears—which ...