Webtrends Analytics 9 Adminstration Guide, May 2016
Each Webtrends user can specify language and locale preferences in the Home page.
Webtrends displays Analytics Reports in your preferred language when the encoding of the profile you are viewing is compatible with the language you specify. If your preferred language is not compatible with the encoding of the profile whose report you want to view, the report is displayed in the default language for the profile. Webtrends uses user-preferred locale settings for formatting dates and numbers for your location.