The following example shows the full definition of
  creating new stores using the Content Store Selector.
    This configuration must be saved as an extension, for example, <extension>\sample-content-store-selector-context.xml.
Note: The list of stores available can be set by updating the list under
    the <property name="storesByName"> property.
    <?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE beans PUBLIC '-//SPRING//DTD BEAN//EN' 'http://www.springframework.org/dtd/spring-beans.dtd'>
<beans>
   <bean id="firstSharedFileContentStore" class="org.alfresco.repo.content.filestore.FileContentStore">
      <constructor-arg>
         <value>${dir.root}/storeA</value>
      </constructor-arg>
   </bean>
   <bean id="secondSharedFileContentStore" class="org.alfresco.repo.content.filestore.FileContentStore">
      <constructor-arg>
         <value>${dir.root}/storeB</value>
      </constructor-arg>
   </bean>
   <bean id="storeSelectorContentStore" parent="storeSelectorContentStoreBase">
       <property name="defaultStoreName">
            <value>default</value>
       </property>
       <property name="storesByName">
           <map>
               <entry key="default">
                   <ref bean="fileContentStore" />
               </entry>
               <entry key="storeA">
                   <ref bean="firstSharedFileContentStore" />
               </entry>
               <entry key="storeB">
                   <ref bean="secondSharedFileContentStore" />
               </entry>
          </map>
       </property>
   </bean>
<!-- Point the ContentService to the 'selector' store -->
   <bean id="contentService" parent="baseContentService">
      <property name="store">
         <ref bean="storeSelectorContentStore" />
      </property>
   </bean>
   <!-- Add the other stores to the list of stores for cleaning -->
   <bean id="eagerContentStoreCleaner" class="org.alfresco.repo.content.cleanup.EagerContentStoreCleaner" init-method="init">
      <property name="eagerOrphanCleanup" >
         <value>${system.content.eagerOrphanCleanup}</value>
      </property>
      <property name="stores" >
         <list>
            <ref bean="fileContentStore" />
            <ref bean="firstSharedFileContentStore" />
            <ref bean="secondSharedFileContentStore" />
         </list>
      </property>
      <property name="listeners" >
         <ref bean="deletedContentBackupListeners" />
      </property>
   </bean>
   
</beans>
The following example shows the web-client-config-custom.xml file:
 <!-- Configuring in the cm:storeSelector aspect -->
   <config evaluator="aspect-name" condition="cm:storeSelector">
      <property-sheet>
         <show-property name="cm:storeName" />
      </property-sheet>
   </config>
   <config evaluator="string-compare" condition="Action Wizards">
      <aspects>
         <aspect name="cm:storeSelector"/>
      </aspects>
   </config>
   ...
  