I don't think I understand your explanation correctly.
Per above, I made a process "widget use" whose input is "widget" and output is "widget waste".
I'm having trouble making a separate process to treat the widget waste. If I make it a waste treatment process then it doesn't show the flows I need (it just shows a few, from construction and metal). If I make it a product, then what is the input and what is the output?
Finally, you are saying to add the "widget use" flow to which process? "widget use" process?
This is hard to figure out since the Bottle example in the case study uses a pre-made waste process with lots of inputs and outputs; whereas I need to build my own waste process--I obviously know the inputs but I don't know the outputs.
