I started an issue to ask the translation group managers for input on what would we can do to help the translation group managers for the User Guide:
In response to comments so far, I recently created a chat group on
drupalchat.me for User Guide translation/editing:
In Slack, we tend to use the #documentation channel.
Anyway, your input is requested -- please add a comment to that issue, if you have not already, or post a question/comment in Slack or Drupalchat. Thanks!
--Jennifer