This is a business process model described in a UML activity diagram. The diagram describes an Information Request Case Management process for an organization that produces documents requested by external entities. The documents produced contain sensitive information therefore the process was put in place to maintain the integrity of the information provided and, when necessary, obtain approvals to provide the requested documents.
The initial work on the engagement involves understanding the roles, activities, business events and sequence so that this model can be drawn and confirmed with the stakeholders. Then the work to build the software to support the process is started, including creating Balsamiq mockups to show what the future state UI can look like.