If you have the column already located in the data source you can pull the dotted line reporting relationships into the software by going to the resync properties and map out the dotted line reporting relationship.
Dotted Line: Reporting relationship
Dotted Line: Resync results
Finish out the resync properties again. And then resync the data in the Data tab.
Dotted Line: Dynamic connector
If you do not have a column in the data source for the dotted line reporting you can manually add the dotted line. To add a dotted line manually to the chart you can drag the Dynamic Connector over to the chart and match the line from one box to another.
