By default, locale specific content is shown if it’s available; otherwise, “All Locales” content is displayed.
Navigate to Manage > Content > Locales dropdown
To create a locale specific content, change “All Locales” to a specific locale.
Note: If you do not see the “All Locales” dropdown then your site is not configured for multilingual content. You can easily do this by adding another language. See “Add New Languages”