Update config applicationNamespace section

Signed-off-by: Wen Zhou <[email protected]>

src/content/docs/upgrade-install-new-operator.md

@@ -43,7 +43,10 @@ The Open Data Hub operator is available for deployment in the OpenShift Operator
 4. The subscription creation view will offer a few options including `Update Channel`, make sure the `fast` channel is selected. Click `Install` to deploy the opendatahub operator into the `openshift-operators` namespace.
    ![Select Channel](../assets/img/pages/docs/quick-installation-new-operator/channels.png "Select Channel")
 
-5. To view the status of the Open Data Hub operator installation, find the Open Data Hub Operator under `Operators` -> `Installed Operators`. It might take a couple of minutes to show, but once the `Status` field displays `Succeeded`, you can proceed to create a DataScienceCluster instance
+5. [Optional] To customize the "applications namespace", config it from `DSCInitialization` instance from either "Form view" or "YAML view".
+   ![Select NS](../assets/img/pages/docs/quick-installation-new-operator/application_namespace.png "Select NS")
+
+6. To view the status of the Open Data Hub operator installation, find the Open Data Hub Operator under `Operators` -> `Installed Operators`. It might take a couple of minutes to show, but once the `Status` field displays `Succeeded`, you can proceed to create a DataScienceCluster instance
    ![Installed Operators](../assets/img/pages/docs/quick-installation-new-operator/operator-installed.png "Installed Operators")
 
 ### Create a DataScienceCluster instance