On the Trend analysis page, you have a trend chart with data points.
Select Edit.
From Edit trend, select Series.
Select to open the Style menu, and then select from the following:
Color
Width
Dash type
Marker
Interpolation: Allows you to change the graph line representation: Linear or Smoothing . The Interpolation option is visible only for analog series.
Select any area outside the pop-up to exit the menu.
Select below Y-Axis and select the appropriate Left or Right options. NOTE: If the data point is either Binary or Multistate, the dropdown list is disabled.