Attaching a document to a process is as easy as assigning a role. Right-click the task element to open the Quad Menu and click Select document. To change or remove attached documents please also use Select document.
Before you can attach a document to a process step, you need to select the document model first in the dialog Manage used models. After a document model is selected, the dialog Select referenced document shows all available documents in this model. Select the invoice document and click OK.
The attached document is displayed on the task.
Mark as input/output
In the dialogs Select referenced documents/IT Systems/domains/etc. you can mark referenced elements as input or output to this process step. Click the green arrow for input and the red arrow for output.