Season 7. Georgette gives birth at Mary's apartment with Lou and Mary attending. Ted and Georgette have a little girl named Mary Lou, the most exciting thing to ever happen in Mary's bedroom according to Sue Ann. Mary tries to sell an article she wrote to a magazine and is not happy with the feedback she receives from Lou.
Usually, of course, a first-person novel has only a single viewpoint character. The hazard there is that one person can only be in one place at a time, so if you have action going on in multiple venues at the same time, you really have to use multiple first-person viewpoint characters.
Third Person and First Person are by far the most common point of view styles in novels. In poetry, it's first person, then second. Omniscient third person is a fairly distanced viewpoint where the narrator hovers above the action, shifting from one character and place to another. Literally, omniscient means 'all knowing'. Sometimes this includes the author's opinion (in first person).