There are 2 main ways to capture systems on boxes.
If your priority is to capture and see which systems are used, add systems as role on a whatbox.
This is quick and easy, as you are capturing roles... (More)
What message do you want to convey? To show the complexity of a process, you can make it look complex by adding all the feedback loops, failure paths and exception handling as possible.
This is probably not what you want.... (More)