1. Navigate to Configure > Splash Page
2. Next to the 'Splash language' field, select the desired language
3. Save changes
This will change the language of much of the text on the splash page from the default of English. Available choices are:
When the language setting for the splash page is changed, Dashboard will substitute translated text certain fields on the splash page. The amount of text translated depends on the type of splash page. For a click-through splash page, nothing will be changed, whereas in a sign-on splash page (pictured below), all text except the welcome banner and the branding will be translated.
Further customization is always an option, as explained in the articles below.