Help adding a secondary vertical axis to graph in 2010 version

[bitrusty]

Hello, Excel has changed a lot since I last had to do this . . . I am in Excel 2010. Trying to add a secondary vertical axis to a graph. Excel help says select chart type: Combo. However there is no chart type combo option, my list of chart types stops at Radar. Is there another method? Thank you in advance from
Faye

 

[jayor215]

What type of chart are you looking to add? Bar or line, or something else?