Copy to New for End Users

In the Cireson Portal, Analyst are able to use 'Copy to New' task to copy a work item (SR or IR). How do we allow the End Users to use the 'Copy to New' task. They don't have that as a Task in the Tasks bar while viewing a work item (SR or IR).
However, we don't want them to see that task if the SR has Activities since the Activities are not copied to the new work item.