In a news package, you will often see a shot of the reporter on-camera, speaking directly to the viewer. A reporter-led shot is called a Standup, and they help fill in information gaps within the story. The reporter sticks to the story's facts during a standup and avoids giving personal opinions.
As reporters record interviews and collect b-roll footage, they note what information needs clarification or reinforcement. It is then that they will quickly write their standup and record it in a location relevant to the story. The recording of the standup typically takes place before the editing stage.