Opening the child diagrams of a linked item from an activity diagram
When an Activity Diagram item has a linked item, you can open child diagrams of that linked item. For example, double-clicking a Call Operational Action allows you to open child diagrams of the linked Operation.
• Right-click the Activity Diagram symbol, select Open, and then click the command for the diagram you want to open.
Alternatively,
1. Double-click the Activity Diagram symbol.
2. If Modeler opens a popup menu, click the command for the diagram you want to open.