I used miro and its inbuilt AI to generate a first draft of a process diagram for my project. I didn't like it, but it proved to be a starting point for a top level view of what I was trying to achieve. The most valuable part of this task is that it helps visualise the top level tasks and then sets you off thinking about the various component parts required to complete each top line task and then how you can bring it altogether to achieve the final goal. Not sure if I have anywhere near the number of hierarchical steps but it's something to built on further.