webNetwork / UW has a few ways to set the language a user should use when they log into webNetwork.
The user can have their machine/browser set to a different language or they can set their user object to a different language.
Currently, webNetwork only supports English, Spanish, French. The default is to pick up from the browser/machine.
The user, however, can force their account to one of these settings by launching the Change Account Info tile. At the bottom, there is an option for Browser, English, Spanish, French. This is set on a users directory account under an attribute called swareLocale.
swareLocale = <blank> (Use browsers configured language)
swareLocale = es (Spanish)
swareLocale = en (English)
swareLocale = fr (French)
As of right now, this value is not exposed in webAdmin, but an Administrator can change this for the user by using a LDAP Browser.