Series.ParentDataLabelOption (Excel)
Specifies the parent data label option (banner, overlapping, or none) for the specified series within the chart group. Possible return values are xlParentDataLabelOptionsBanner - Banner parent data label, xlParentDataLabelOptionsNone - No parent data label, xlParentDataLabelOptionsOverlapping - Overlapping parent data label.
ActiveChart.FullSeriesCollection(1).ParentDataLabelOption = xlParentDataLabelOptionsBanner