In the Flow Manager, hover over the flow and click the copy icon (Duplicate Flow).
In Giraffe v6, you can also open the flow in the Flow Builder and choose More options > Duplicate flow. The copy opens automatically.
Giraffe copies the flow definition, including its flow graph. copy is added to the end of the flow name.
To edit the copied flow, open it from the Flow Manager.
Rename the flow if you wish. Make changes to the new flow as desired.
Apply the new flow (from the Flow Controls section of the Properties Palette) to a geometry to preview its results.
Warning: duplicating a geometry with a flow applied doesn't duplicate the flow definition. Editing the flow graph from the copied geometry changes every geometry that uses the same flow.