Anything that doesn’t fall inside posts, pages or taxonomy goes into String Translation. This includes the site’s tagline, general texts in Admin screens, widget titles and many other texts.
Activating the module
WPML’s String Translation module is part of the Multilingual CMS account type. To enable it, you first need to download and install it from your WPML.org account, under the Downloads section.
Then, go to the WPML -> String Translation page in your site.
Choosing Which Strings to Display
A complex site may contain many strings to translate. Use the display filter, at the top of the String Translation page, to determine which strings to display.
Which strings to display – choose the translation status (everything, translation complete, translation needed or waiting for translator)
Strings domain – WPML organizes strings into different domains, making it easier to find a specific string. If, for example, you are looking for a widget string, select the Widgets domain
Search – you can enter a search value to narrow down specific strings