Sometimes it's not allowed. What kind of chart is it? Is the workbook shared?

- Jon
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Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
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Phil Hageman wrote:

I have successfully added a series to a chart, using the secondary axis.
When adding another series to the chart, Excel uses the Primary axis as
default to load the series. I want to change the Primary axis to Secondary
axis, but Excel does not allow that option - both options are grayed out,
showing the Excel-selected Primary axis. How do I get this second series on
the Secondary axis?

Thanks, Phil