This feature is planned for our upcoming releases in the second part of the year. We won't be able to deliver this functionality in the first half for sure. You can create 4 more fields to represent your other two languages in the same module, and create different templates to show the proper language.
We understand that this is not the best option and we will do our best to speed up the development of multilingual custom modules in the upcoming months.
Thank you for contacting us, and we look forward to answering any other questions you might have.
the Telerik team
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