This feature/improvement can help to combine several different graphs in one graph slot.
For example, we have separate graphs for Total_memory_allocation[1] per host and JavaApplication_memory_usage[2].
The resulting graph should contain both graphics mentioned above.
Example graphs, attached as
1.JavaHostSystem.png - Total_memory_allocation[1]
2.JavaPoolAlloc.png - JavaApplication_memory_usage[2]
3.Combined.png - combined screen example
Please note 2 additional Y-scales.