Installing necessary WMPL plugins
To start translating plugin you need buy WPML plugin and install necessary plugins. After purchase go to your account and install following plugins
1. WPML Multilingual CMS
2. String Translation
3. Translation Management
After downloading necessary plugins, go to WP Admin -> Plugins -> Add New
You will have WPML menu as show below:
We are done with installing necessary plugins to start to translate the plugin.