You can have two series visible in the Chart at the same time. To do this, follow the steps below:

 

1.Open the Element Properties view for an element

2.Go to the Graph tab

3.To open the Chart Properties window, double-click the chart or right-click the chart and select Chart Properties... from the pop-up menu.

4.Go to the Axes tab.

5.See the options in the Axis drop-down box. Verify that both vertical axes are set to be visible (the Visible checkbox is checked) and make both visible if they aren't.

6.Go to the General tab.

7.Select the series that you want to display on the primary axis from the Series drop-down box in the Y-Axis group.

8.Select Settings...

9.Select Primary axis from the Show series drop-down box.

10.Define the Series style and Line width in the way you prefer.

11.Click OK.

12.Select the series that you want to display on the secondary axis from the Series drop-down box in the Y-Axis group.

13.Select Settings...

14.Select Secondary axis from the Show series drop-down box.

15.Define the Series style and Line width in the way you prefer.

16.Click OK. There are now two series visible along with axes at both sides of the chart.