Hi Gemma,
The only thing I could think of as a workaround is creating a discussion for each language and then people can post in that language in those discussions, but this is definitely not ideal as they wouldn't all be engaging with each other in the same discussion. I would definitely recommend submitting this as product feedback within Participate > Product Ideas for our product team to consider for a future enhancement request.
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Julia Plymack
Senior Customer Success Manager
Cvent
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