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