You can create a shortcut using copy and paste.
        
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                In the Browser or diagram window, select a target object in the target model or package and press CTRL+C or select .
            
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                Select the model or package where you want to create the shortcut in the Browser, or double-click a target diagram.
            
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                Select .
                 
                    The shortcut symbol is displayed in the model or package diagram. 
 