Layering Charts in Minitab

Hi everyone,

I have many charts with two separate types of data on them. The charts were created by going to Stat -> Control Charts -> Variables Charts for Individuals -> Individuals. I would like to take the charts from these two different files and layer them on top of each other so that you can see both of the lines at once. Could you please give me some advice on how to go about accomplishing this. Thank you.