Depending on the users' level of access to the Q&A section and their group role, the users can either communicate with each other, post questions to the Q&A coordinator or members of other user groups.
An individual user can have either None, View, Post or Q&A coordinator access to the Q&A section.
With the View access, individual users can see the questions addressed to them ("To", "Cc", "Bcc" fields) but not reply to them.
With the Post access, an individual user can communicate only with the Q&A coordinator.
When replying to a question, a Q&A coordinator discloses their name.
In case an individual user is given Q&A coordinator access, they will be able to see all the questions and users, who communicate in the Q&A section, as well as see the names of other user groups.
It is not recommended to give this level of access to the individual users in order to keep undisclosed the information about other participants of the project.
A collaboration user can be given the same levels of access, and one additional option is available - Post to own group.
With the Post to own group access, the collaboration users will be able to communicate with each other, all questions will be visible to all groupmates.
With the Post access, collaboration users can post a question to the Q&A coordinator, to the groupmates or users of other user groups if collaboration is set up with any. This post will be visible to all members of his user group and to the addressee(s) in the "To", "Cc", "Bcc" fields.
In a reverse scenario, when the Q&A coordinator initiates a thread with a collaboration user, the post will be visible only to this user and addressee(s) specified in the "To", "Cc", "Bcc" fields.
If a user was moved to a different user group, he will still see his own questions (raised by him) and all the posts, where he was specified in the "To", "Cc", "Bcc" fields.
The questions raised by the previous group mates will no longer be visible (unless this user was added to the "To", "Cc", "Bcc" fields).
The questions raised by the new group mates will become visible.