Either right-click on the series, choose Format Data Series, then the Axis
Tab
or click on the series, the from the Format menu, Selected Data Series, and
again select the axis tab.

You can also try looking for "Format Axis" in Excel help. "Add a second
axis" may well be a sub-topic there (depending on which version of Excel
you've got).
--
David Biddulph

"Curtis" wrote in message
...
Any more details??

thanks,

cd

"David Biddulph" wrote:

Select one of the series, Format Axis, select secondary axis.
--
David Biddulph

"Curtis" wrote in message
...
I would like to overlay 2 charts with different y-axis and the same
x-axis?

thanks,

Curtis