Relationships are defined by drag-and-drop:
- Select the target component in the left application tree.
- Select the source component in the right application tree.
- Select the connection point of the source component and drag it to the connection point of the target component (Drag and Drop).
- A new entry appears in the "Connections from" list, which is stored in the ACClassPropertyRelation table with ConnectionTypeIndex = 11 (Global.ConnectionTypes.ConnectionPhysical).