To complete the installation of I18NLayer:

- Restart Zope.  This may be done from the Zope Control Panel.

With CMFQuickInstaller (optional)

- Use the QuickInstaller tool to register I18NLayer in your portal
  instance

With Plone (optional)

- Use Plone Setup, to install I18NLayer product.

Without CMFQuickInstaller

    - Create an ExternalMethod object inside your portal object with the
      following data:

      Id: install_I18NLayer
      Title: installs I18NLayer to this portal
      Module Name: I18NLayer.Install
      Function Name: install

    - Run this newly created ExternalMethod by clicking on the test tab.