it is recording all the time. once you say you are ready for the exam, they will prompt you to take the carmera to show the whole room, your photo id, your face, door closed, window, all your exam taking area (they will ask you to have a clean desktop prior to the exam, and leave only allowed items on the table ), if notes is allowed, you have to show both sides of the notes. all immediate surroundings and walls, no other people is allowed in that room. video, sound, keystroke, and screenshot are recorded all the time, and your face has to be in the camera all the time too. you are not allowed to leave the seat. if you are not in the frame for a few seconds, you risk getting flagged by the proctors when they review the recording.