Chart.ShowLegendFieldButtons (Excel)
Returns or sets whether to display legend field buttons on a PivotChart.
Set the ShowLegendFieldButtons property to True to display legend field buttons on the specified PivotChart. Set the property to False to hide the buttons. The ShowLegendFieldButtons property corresponds to the Show Legend Field Buttons command on the Field Buttons drop-down list of the Analyze tab, which is available when a PivotChart is selected.
ActiveChart.ShowLegendFieldButtons = True