How to choose language pack

I need to set this right to choose what language to put into the server would like to know how I configure it to work for English and Spanish.

# ---------------------------------------------------------------------------
# Multilingual support
# ---------------------------------------------------------------------------
# Enable or disable multilingual support.
# Default: False
MultiLangEnable = True

# List of allowed languages, semicolon separated.
# Default: en
MultiLangAllowed = es;en

# Default language, if not defined.
# Default: en
MultiLangDefault = es;en

# Enable or disable voice command .lang for changing languages on the fly.
# Default: True
MultiLangVoiceCommand = True

# Enable or disable multilingual SystemMessages support.
# Default: False
MultiLangSystemMessageEnable = True

# List of allowed languages for SystemMessages, semicolon separated.
# Default: 
MultiLangSystemMessageAllowed = es;en

# Enable or disable multilingual NpcStrings support.
# Default: False
MultiLangNpcStringEnable = True

# List of allowed languages for NpcStrings, semicolon separated.
# Default: 
MultiLangNpcStringAllowed = es;en