When you create a project, you can add source language and target languages. Source language is the base language of your content that will be translated. Target - the languages into which your content will be translated.
Read more --> How to change a source language?
How to add languages to the project?
To add language to the project, follow the next steps:
Click "Workspace" on the left-side panel and choose "Projects."
Choose the project to which you want to add the language and click on the button "Add language."
Select the language from the list.
Great! You successfully added new language(s) to your project.
Awesome! You finished the article about the languages adding. If you have any questions, please contact our support.