Hi,
For multi creating or cloning there is export & import via csv functionality available.
We use it to copy a whole bunch of org structure below a required root and import it in the existing org chart at any other location, the same export selected root in csv and them run the import wizard to import it below the required root.
You find the export option in the actions menu, but the "import data" wizard option is available under views boxes (right click) objects to help select the root object.
This way you can clone existing structures for O & S in existing chart.
Best regards.
Mohammad