For a human task (object symbol of the Function object type) executed by a user, the following items can be modeled in the data flow diagram:
All listed elements represent data from a dialog object and are linked to it by the represents connection.
Preferred user
The preferred user is used if a task is to be completed by this specific user rather than the group of users intended for this task in the business model.
Escalation manager
The escalation manager is the user who is notified when a human task is not completed by any executor by the due date.
As a rule, all persons and roles involved in an automated process must be modeled in an organizational chart that is connected to the model intended for execution. However, you can model an escalation manager additionally or exclusively in the data flow diagram. This is an exception as it must not be in an organizational chart. If an escalation manager is defined in a data flow, the escalation managers modeled in the organizational chart are ignored.