If a user is invited to join a circle, the invitation appears in their other circles page with an option to Join or Decline.
If join is selected, they are then able to see the circle in their other circles page. If declined, the invitation disappears.
If a user is invited to join a circle, the invitation appears in their other circles page with an option to Join or Decline. If join is selected, they are then able to see the circle in their other circles page. If declined, the invitation disappears.