To modify the standard flow logic, write your modification as form routines in a module pool or subroutine pool. To assign them to events, proceed as follows:

1. Go to the view cluster maintenance transaction.
2. Go to the events maintenance screen.
3. Choose New entries.
4. Press the pushbutton Change after the field FORM Routines main program. Enter the module pool or subroutine pool in which you defined the form routines in the dialog box.
5. Specify the event at which to supplement or replace the flow logic in the FORM Routines to be executed from View cluster maintenance table Evt field.
6. Enter the FORM routine name in the same table in the FORM routine field.
7. Save your input.