Attaching existing OV-5 diagrams as child diagrams
After you have created the top-level Context (A-0) diagram, you can decompose its Operational Activity by attaching a child, or decomposition, diagram.
The modeling software does not impose a set limit of diagram levels that you can create to reveal the complexity of parent symbols. The child OV-5 diagram can either be created or attached.
To attach an existing OV-5 diagram as a child diagram
1 Right click the Parent symbol to select it, and then click Child Attach.
The Select for Attaching dialog box appears, with a scrollable list of diagrams.
2 Select the diagram name, and then click Attach.
You will be prompted to save the A-0 diagram.
3 Click Yes.
System Architect attaches the child diagram.
Next
After you have attached the child diagrams, you need to populate the diagram and move the ICOM arrows to their correct positions.