The situation could occur where you would like to translated not only the text on a website, but also the links the text are linking to.
For example : the French translation of a webpage should link to a French external link, other languages to another link.
By default WPML is only showing links to external sites in the translation page.
When you are linking to internal pages (e.g. pdf files) which should be translated, WPML should be adjusted to also show internal links.
This can be done by clicking the cogwheel icon on the translation page
Adjust the "which types of links should appear" dropdown list, to "show all links"
This will enable you to adjust the internal links as well as the external links, when translating