The <deployment> element specifies that all portal users can create new instances of the portlet.

      <deployment scope="user" autoDeploy="false" userCanCreateMore="true" />
      
      <initializer-type>
        sample.displayurl.Initializer
      </initializer-type>

      <init-param>
         <param-name>error-page</param-name>
         <param-value>Error.jsp</param-value>
      </init-param>

      <init-param>
         <param-name>display-page</param-name>
         <param-value>Viewer.jsp</param-value>
      </init-param>

      <init-param>
         <param-name>edit-page</param-name>
         <param-value>Editor.jsp</param-value> 
      </init-param>

      <error-handler>
         <type>sample.displayurl.ErrorHandler</type>
      </error-handler>

      <portlet-path>/sample/portlets</portlet-path>