Individual Sub Plot polylines must be drawn within the __BN_Plot in Layout type projects.
It denotes the individual plots in which buildings can be constructed.
In Layout With Housing Type project, Individual Sub Plot polylines must encompass the __BN_ProposedWork.
Every Individual Subplot must have at least one segment exactly coinciding with __BN_MainRoad or __BN_InternalRoad or __BN_Pathway polylines to provide means of access.