Series Properties Dialog Box, Legend
Select Legend on the Series Properties dialog box to define the legend for the specified series.
Do not show this series in a legend
If this option is selected, the legend item for this series will not be displayed in the legend.
Custom legend text
Type a string or expression that will be shown in the legend for this series.
Show in legend
Select the legend that specified series will be displayed in. Only applicable if there are multiple legends on the chart.