Step 6: 

<servlet>
<servlet-name>library2</servlet-name>
<description>A new library with my new site!</description>
<servlet-class>org.greenstone.gsdl3.LibraryServlet</servlet-class>
<init-param>
<param-name>library_name</param-name>
<param-value>library2</param-value>
</init-param>
<init-param>
<param-name>site_name</param-name>
<param-value>mysite</param-value>
</init-param>
<init-param>
<param-name>interface_name</param-name>
<param-value>default</param-value>
</init-param>
<init-param>
<param-name>receptionist_class</param-name>
<param-value>DefaultReceptionist</param-value>
</init-param>
<init-param>
<param-name>default_lang</param-name>
<param-value>en</param-value>
</init-param>
</servlet>

-------------------------------------

<servlet-mapping>
<servlet-name>library2</servlet-name>
<url-pattern>/library2/*</url-pattern>
</servlet-mapping>

Step 8:

<servlet>
<servlet-name>rand</servlet-name>
<description>A new library with my new interface!</description>
<servlet-class>org.greenstone.gsdl3.LibraryServlet</servlet-class>
<init-param>
<param-name>library_name</param-name>
<param-value>rand</param-value>
</init-param>
<init-param>
<param-name>site_name</param-name>
<param-value>mysite</param-value>
</init-param>
<init-param>
<param-name>interface_name</param-name>
<param-value>althor</param-value>
</init-param>
<init-param>
<param-name>receptionist_class</param-name>
<param-value>DefaultReceptionist</param-value>
</init-param>
<init-param>
<param-name>default_lang</param-name>
<param-value>en</param-value>
</init-param>
</servlet>


--------------------------------------

<servlet-mapping>
<servlet-name>rand</servlet-name>
<url-pattern>/rand/*</url-pattern>
</servlet-mapping>