A Language Set is a one2edit™ Translation-Memory database.
The Commit Translations workflow action is used to commit all translations in a Job to a specific Language Set. It is also possible to import TMX (Translation Memory eXchange) files to a Language Set in one2edit™.
You may create as many Language Sets as you require. However, most clients only require one (and maybe a second set for testing), as translations are not shared between Language Sets.
Settings > Language Sets
Expand the main Navigation menu, and click on Settings > Language Sets.
This opens the Language Sets dialog.
There will be a Language Sets folder present by default, but there are no default Language Sets.