Multi-Series and Trend Lines
If a Chart with Chart Type Line or Column is added to the Dashboard, additional configuration is available. For these Chart Types, you can display up to three Views on the same Chart and, if needed, enable a Trend Line for each View.
In the View drop-down list, select from any View available to you. For multi-series Chart Types, a View must be defined for the first drop-down option with the current View displaying as a pre-populated value. Views may be defined for the second and third drop-down options or these may be set to clear. If the series should include All Records, this should be set in the first drop-down option. You can enable or disable a trend line for each View.