WPML is possibly the most-used multilingual plugin for WordPress. Complianz is developed to work seamlessly with WPML and most other multilingual plugins for WordPress. Steps for alternative plugins will be very similar and most likely be supported as well. A great (free) alternative for WPML
The Privacy Suite for WordPress
Get compliant today in the European Union, United States, Canada, United Kingdom, Australia, Brazil & South Africa with the only Privacy Suite for WordPress that offers a fully-featured plugin for Worldwide Compliance.