How to put two charts in same window?

 

Eg. On netdania site, you can easily superimpose two or charts over each other in same window with options of 'Overlay' and 'Relative'

Is it possible to overlay two charts in one window in MT4?

thanks.

 
https://www.mql5.com/en/code/7933 (didn't check it on B600 >)
 
I thought we have chart object function?