PowerDesigner supports all the objects necessary to build top-level diagrams.
| Object | Tool | Symbol | Description | 
|---|---|---|---|
| Process |  |  | Top-level process that interacts with business partners (see Processes (BPM)). | 
| Organization unit |  |  | Business partner (a company, a system, a service, an organization, a user or a role) that interacts with the top-level process (see Organization Units (BPM)). | 
| Role association |  |  | Interaction between a top-level process and a business partner (see Role Associations (BPM)). |