Procedure requirements

state: "analyzing"
  steps:
    - add more information:
      fields:
        comment:
          - required
          - etc
        file:
          - option
          - pdf,doc,docx
    - add report:
      fields:
        file:
          - required
          - pdf
        comment:
          - optional
    - begin auditing:
      transition: "begin auditing"
      new state: "auditing"