Multi-unit Y-axes

[Roberto]

With multiple Y-axes one can have two Y-axes.

Sometimes the Y-axis of one curve can have different units at the same time.
E.g. Y1 for power, Y2a for consumed energy and Y2b for total costs (being directly / linear related to consumed energy).

It would be nice if an axis could have two or three tick mark numbers (e.g. energy (kWh) from 0 to 10 and costs ($) from 0 to 2).