How to include multiple Earned Value charts on the same graph

1. Ensure that you have your Earned Value data series all in the same workbook
2. Ensure that the date series' for your Earned Value series are actually formatted as dates
3. Start by rendering the first Earned Value series as a SCATTER PLOT with straight lines
4. Edit the chart data to add subsequent Earned Value series until they're all on the same chart

TODO: Update this post to include screen shots.