TChartLegend.CanOverlapWithChart Property
If true, the chart can overlap the legend. Note that if Placement is different from TChartLegendPlacement.NotDocked then CanOverlapWithChart will be false. But even if not docked, this value can still be false as newer Excel versions allow you to specify this property on its own.
Syntax
Namespace: FlexCel.Core
public Boolean CanOverlapWithChart { get; set; }