Portuguese is definitely an available and supported language for JIRA and JIRA Service Desk. Please follow these instructions to set it as the default language for your instance.
Sadly this is an all or nothing endeavor, as currently there is not support for a multi-lingual instance. There is a feature request for that however, which can be found here. I suggest that you vote on and watch the issue for further development!
I’m a designer on the Jira team. For a long time, I’ve fielded questions from other designers about how they should be using Jira Software with their design team. I’ve also heard feedback from other ...
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