I am aware of secondary axis. But is it possible to plot more than 2 types
of data? So, for example I want to plot over time (so week1, week 2, etc =
x-axis). and on the y-axis I want to plot firstly the volume of a particular
product sold. Secondly the weekly price it has been sold at, thirdly the
margin per item and also a percentage of this product as overall number
against all types of this product. This is because all these items will tell
the full story of what is happening and how sales are impacted. Is it
possible to have more than 2 y axis? or somehow 'overlap' different graphs?