Modern business requires having personnel placed at the different countries speaking different languages.
One of the great Backstore features is that it is Multi-language application which allows each of the users to use its own preferred language.
To change users language open the Settings and permissions application available at the https://settings.backstore.eu/
Within the settings application select Users module and edit option next to the user as shown on picture:
At the language column select language you would like to set and confirm input selecting Save button.
Reselect your company at the upper left menu or sign out and sign in again and the new language should be loaded.