Creating a new Group is very simple. All you need to do is click on the Groups button in the sidebar, then click on the + button. From there, just click on the Create Group option.
You will need to name your group, then decide whether you want it to be Private or Public.
If you choose the Private option, users will not see the Group in the list of Groups that they can join – they will instead need to be invited by a current Group member to join.
If you choose the Public option, users will able to join the Group by clicking on the + button, then selecting the Join Group option.
Lastly, you will need to decide whether you want to allow Q&A topics to be posted. Like Yahoo Answers or Quora, questions are posted in the channel, and users are free to answer them in a thread.
If you want to limit what questions users can post, you can opt to enable the User Generate Questions Require Admin Approval option.