SeriesLeaderLines
Border
Represents leader lines on a chart. Leader lines connect data labels to data points. This object isn’t a collection; there’s no object that represents a single leader line.
Using the LeaderLines Object
Use the LeaderLines property to return the LeaderLines object. The following example adds data labels and blue leader lines to series one on chart one.
With Worksheets(1).ChartObjects(1).Chart.SeriesCollection(1)
.HasDataLabels = True
.DataLabels.Position = xlLabelPositionBestFit
.HasLeaderLines = True
.LeaderLines.Border.ColorIndex = 5
End With