1. Function Hierarchy Diagrammer

2. Open on Existing Function

3. From Process Model to Function Hierarchy
Base Process X A B C D E X A C B D E

4. What Is a Function Hierarchy?
Represents business processes independent of organizational, geographical, or political boundaries
Shows how the business fits together
Results from functional decomposition

5. Process Models and Function Hierarchies
Where can I model . . .
The detailed steps in a function/process?
PM/FHD
The sequence of steps? PM
What starts it off? PM
What results from it? PM
Where it fits with the rest of the business?
FHD
The data it uses or produces?
PM/FHD
The materials it uses or produces? PM
Who is responsible for it?
PM/RON

6. Why use FHD instead of PM?
Vertical View Vs. Horizontal
Organizational Capability
Reparenting Automation Functions
Business Rules as Functions
Documentation Capability
Organizational Preference

7. Building a Function Hierarchy from Scratch
1. Identify the top-level or root function.
2. Decompose the functions.
3. Group subfunctions.
4. Remove all references to mechanisms.
5. Identify common functions.

8. How to Decompose Functions
Collect information
List candidate functions
Write a top-level function
Decompose and include functions from the candidate list
Review for completeness and relevance
Feedback to others
Decompose to elementary level and add detail

9. Elementary Business Functions
Take the business from one state of consistency to another or do not change the state of the business at all
Must always continue to conclusion or be totally undone
If an intermediate step is valid, the function is not elementary.

10. Atomic Functions Defined as those on lowest level of hierarchy
Elementary Business Functions may be atomic (most frequent case)
Could be composed of atomic functions

11. Stop Decomposing When . . . The hierarchy:
Is accurate and self-contained .
Covers the scope.
Can be read.
The names are succinct and meaningful.
The functions have been sufficiently decomposed.

12. Documentation in PM Automation Check Box
Timing and Cost Analysis (Main,Resources)
Presentation (Multimedia)
Descriptive Documentation (Text)

13. Documentation in FHD
Immediate = Form
Overnight = Report

14. Documentation in FHD

15. Documentation in FHD

16. Documentation in FHD

17. Documentation in FHD

18. Common Functions Terminate membership Manage delinquent memberships
Identify delinquent members
Request return of overdue items
Invalidate membership of delinquent customer

19. Are the Functions Really Common?
Do the functions carry out the same processing?
Do the functions manipulate the same information?
Do the functions have identical decompositions?

20. Combining Common Functions
1. Identify common business functions.
2. Trace the route back up to the common parent.
3. Replace the common functions with a single function.

21. Beware of Mechanisms! Mechanism:
We take the customer’s photograph and stick it to the bottom left-hand side of a blank card. We fill in all the member’s details on the card. Finally, we cover the card in plastic before giving it to the member in person or mailing it to the member.
Business Function:
Issue new membership card

22. Indicating Candidates for Automation
Select the To-be-automated box
Use color
Reparent functions into a new hierarchy C A X B D E B D E