Hi,
I would like to create a bar chart with many stacking groups as in the following example:

Right now there are two stacking groups - combine by stack and combine by stack100. I don't see the option to have put some elements on the first stack, then combine others on a second stack and so on. There would be the possibility of using the secondary axis but that is just a second stack that comes with its own set of problems. What am I missing?
BR, Ray