Note: You must use the chart legend to change the color, pattern, or other attributes of the data plotted in the chart. If you don't want a legend in your final chart, hide it.
To add or change a chart legend:
Select the chart, then choose Chart Options from the Edit menu and click Labels.
Tip: You can also double-click the chart legend, if it has one.
Make sure the Legend checkbox is selected.
Select the options you want.
Click a circle to position the legend in relation to the chart.
For area, stacked area, line, X-Y line, scatter, and X-Y scatter charts, you can display data points with a symbol. To use the symbol in the legend, select Use Symbol.
To hide the legend:
Double-click the chart legend and deselect the Legend checkbox.
This document contains information from Help Center, the help system included with your computer.