Add a Group to Create Separate Line Charts in a Report
When you add a Group for a line chart report, it enables a separate line chart for each group.
Configure the following fields.
: This name will appear as the header for the individual line chart.
: Enter a title that will be displayed as the Y-axis label for the group's line chart.
For the steps,
See Add a Group to Create a Double Header in a Tabular Report.