Click "User CP" at the top of the page. Then click "Group Memberships" in the bottom-left corner of the page. If you are already a member of the CCG, choose to be identified as a CCG member in the bottom-most section ("You may choose to be identified as a member of the following groups"). If not a member already, go to the top section ("The following groups are available for you to join") and click on the circle next to the CCG group. Go down and press "Join Group". You will then be taken to a page where you send a message to one of the CCG Ambassadors for you to be approved for joining the group. To be approved, you must be signed up at the
CCG Website.
Hope that helped!