You will probably only need to do this once, when you first use WordSmith Tools.
How to get here
The Language Chooser is accessed from the main WordSmith Controller menu: Settings | Main Settings | Text and Languages | Other Languages.
What you will see may look like this:
9 languages have been chosen already.
At the bottom you will see what the fonts on your system are for the current language selected.
See also : Language, Font, Sort Order, Other Languages, saving your choices, Changing the language of saved data