Hi Bob - Thanks for reaching out!
I would recommend using separate pages for this to make it as clean as possible without having to add much complexity on your side either. Here's how I'd do it:
- Make the home page with the process diagram
- Link the elements on this home page to other pages in the document, which explain in more detail
- Add a link to the elements on the other pages (where appropriate) to go back to the home page or to take the user to a Google Doc
I hope that helps!