Specifies how bars and columns are positioned. Can be a value between -100 and 100. Applies only to 2-D bar and 2-D column charts. Read/write Long.
If this property is set to -100, bars are positioned so that there's one bar width between them. If the overlap is 0 (zero), there's no space between bars (one bar starts immediately after the preceding bar). If the overlap is 100, bars are positioned on top of each other.
This example sets the overlap for chart group one to -50. The example should be run on a 2-D column chart that has two or more series.
myChart.ChartGroups(1).Overlap = -50