You can create  a flow from the Toolbox, Browser, or Model menu.
            - 
                    Use the Flow/Resource Flow tool in the Toolbox 
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                    Select  to access the List of Flows, and click the Add a Row tool. 
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                    Right-click the model (or a package) in the Browser, and select . 
 
For general information about creating objects, see Core Features Guide > The PowerDesigner Interface > Objects.