A user can change the language of their eSignAnyWhere (eSAW) interface by following this path: SETTINGS -> ACCOUNT -> GENERAL -> INTERFACE LANGUAGE
This change will only be reflected on the user's profile and will not be extended to other members of their organisation.
Further information on configuring a user's account can be found at the following link:
https://confluence.namirial.com/display/eSign/Account+Settings