This must be easy, but I cannot see, how:
I have 3 data series:
1) value1
2) value2
3) value3 => their ratio i.e. value2 / value1
Value3 is very small, near zero, so I hardly can see it on the chart.
How can I say:
- Scale value1 und value2 at the right side?
- Scale value3 at the left side and independent of the 2 other series?