💬 How to configure language for a specific account
You may set your account to issue all the documents in the language you need in the Settings > Account Preferences > Company information. Here, on the Language box, you can choose between English, Portuguese and Español;
OR set the language you need only for a few clients. To do this, simply go to the Contacts tab > enter the client's page and click in Edit Client. Then, on the Billing preferences, uncheck the box Use account default settings and set the language of that client only.
Please see the example image below: