How add average line in visual?

Can you please elaborate and share sample data and expected output

Hello Analitika if you're using area chart here's some meterials that may come handy
In the visualaztiom pane there's a magnifying glass icon you can see right you need to click on that then

here you can see the "Average line" option click on that then

By clicking on the add line you can get a average line marker with it's values and details on the area chart visual.

Thanks.