Line Chart: how do you add a summary of the values in the Series (primary axis)?

[psrpsrpsr]

I have a line chart that renders the default measure (a calculated percentage) segmented by the values of the field in Series (primary axis). This is working as expected,  but I need to add a line to the chart that is a summary of the 3 segmented values (e.g. a 'Total' line). How do I do this? Thanks!

[Lynn]

Click on your chart and find the Combinations property. Add another line to the primary axis and leave the series empty. It will plot the default measure for the categories.

[psrpsrpsr]

Thank you!! I have to say though that that is a fairly unintuitive way to achieve this. Thank the powers that be for this forum :)