How to create some prototypes for a unknown process.

1. Create user-goals, to get an idea of about the problems, which are solved by the interface. Work together with the users.
2. Create user stories from user-goals, to get more details about the user-problems. Show the user-stories to the users.
   1. Create UseCase - Problem pairs. The Problems may suggest further problems.
      
   2. Create a Solution for every UseCase-Problem pair in order to know, which problem every design solution is made for. Provide solution pictures.
      
3. Create action-diagrams from the user-stories, to get more structure into the user activity.
4. Create implement prototypes, which support action-diagrams.