The few times I've had to map out a complex process I realized that I needed a "document" like file that I could browse and save and view. While I sometimes did this in Expanded view (in v8), the thought shape and links just don't have enough variety to have a visual impact for me when there's a lot going on. In addition, I found it useful to have outlines of certain paths to separate them and make them stand out more visually.
I ended up using a tool I already own and use, Tinderbox (macOS only). Once it was done I attached the file as an internal attachment and took a screenshot of the Tinderbox map, then added that as a Thought Icon. To me this was more effective than using TheBrain Expanded view by itself, and more effective than using Tinderbox by itself, as I can now easily view the flow image at a glance to refresh my memory, and open the full document if I need to. I'm sure this approach would work with any mind map/flowchart/visual software.