You can create Item Flows in two modes:
The Direct creation mode allows you to create the Item Flow between ports or parts in the SysML Internal Block Diagrams.
The Between Part Types creation mode allows you to create the Item Flow between Part Property types. In this mode, you can quickly realize and synchronize Flows on Activity Edges, Connectors, and Messages.
To choose the creation mode
For more information on working with Item Flows, see the following chapters: