Two or more trend graph parts in the same size must be overlaid.

It is possible to display the trend lines at different timings by linking the parts with each other.
Regard one trend graph as a "parent," and the other trend graph as a "child."

The "parent" trend graph must be laid under the "child" trend graph.

The trend graph :  Click [Operation Select] and set the display mode to [Real Time Display]  
 

  For more information on the graph settings and display method, click here.