Pilot (a.k.a. The Nanny) - S1-E1
Continuity mistake: When Maxwell comes over to Fran's mom's apartment he sits on the couch. There is a orange pillow behind him and a yellow pillow next to Fran. Part way through the scene the yellow pillow is now behind Maxwell.
Pilot (a.k.a. The Nanny) - S1-E1
Continuity mistake: After Niles walks into Maxwell's office, C.C. puts her hands on the chair Maxwell is sitting on. When Maxwell says "Yes Niles what is it?" the shot changes and C.C.'s hands are no longer on the chair.
Smoke Gets in Your Lies - S1-E2
Other mistake: Fran and Maxwell come out of the dining room and go into the living room. They come out of the door that normally leads to Maxwell 's office.
Smoke Gets in Your Lies - S1-E2
Continuity mistake: When Val comes over and sits on the couch she crosses her legs. The shot changes and she crosses then again.
Revealing mistake: Ms Babcock enters the house and stands by the small table You can see Maggie in the hallway behind her come out for her scene too early and duck back out of sight, and then quickly re-enter the scene just as the camera pans away. (00:07:20)
Continuity mistake: The smash vase is placed on the office desk by Niles, it keeps jumping back and forth between two different orientations between scenes. (00:10:34 - 00:12:57)
Visible crew/equipment: In the beginning when Niles lets C.C. in the house and she puts an envelope on the table, you can see a crew member start to step out through the hall in the background and step back real quick. Then as C.C. starts to walk back to the door, you can see them step back out to cross over.
The Nuchslep - S1-E4
Continuity mistake: When the Chinese food is delivered, Fran's hair is very flat and the curls are loose. In the next scene, she goes to talk to Maxwell and her hair is noticeably curlier.
The Nuchslep - S1-E4
Other mistake: About 2/3 into the show, Fran carries a box of cookies into Maggie's bedroom. The box's name brand is covered over but Fran says she brought the Mallowmars. However when they show an actual cookie they are eating, you can see it's a Snackwell Devil's Food Cake cookie, not a Mallowmar.
Continuity mistake: When CC and Maxwell arrive at the wedding, CC has no scarf around her neck. When the scene cuts to her shortly after arriving there is a large brightly-coloured scarf around her neck, and two shots later it has disappeared again.
Continuity mistake: In the dining room, CC is wearing a scarf over her head as part of her "safari" outfit. When the shot shifts to a close-up of her looking horrified at the thought of taking the kids to the Zoo on her own, the scarf is suddenly around her neck.
The Butler, the Husband, the Wife and Her Mother - S1-E6
Continuity mistake: When Sylivia is telling Fran about her birth, she raises her right hand and has her left hand on her hip. When the shot changes her left hand is raised and her right hand is on her hip.
Continuity mistake: When Fran and Gracie are making cookies there is a spatula on the cookie pan that changes position a couple of times throughout the scene.
Visible crew/equipment: When Maxwell is in Fran's room and Fran stands up a boom mic is visible.
Revealing mistake: As Chloe Simpson is leaving the mansion at the end of the show, she trips over Fran's foot without touching her. She starts to trip about half a foot before Fran's shoe.
Continuity mistake: In the kitchen, while Fran is telling Maxwell about Brighton and Tiffany in the shower, the glass of juice on the counter appears and disappears between shots.
Continuity mistake: When Maxwell is talking to Brighton about the battle of the sexes, he puts his hands in his pockets. The shot changes and suddenly his hands are at his sides and he puts them in his pockets again.
Continuity mistake: When CC takes the pile of showgirl resumes from Maxwell in the office, she holds them with both hands. When the shot changes, she is holding them with one arm under the pile and the other hand leafing through them.
Sunday in the Park with Fran - S1-E18
Continuity mistake: When Fran is sitting at the table with Grace when C.C. is on the phone, the coloring book in front of Grace is open. Fran goes to pick it up, the shot changes, and Fran has already picked it up.
Sunday in the Park with Fran - S1-E18
Continuity mistake: When C.C. is trying to get Grace to play with the son of the Broadway critic she is coloring with a green crayon. Near the end of the scene it is suddenly a red one, and the paper she is coloring on is all red with no green so she could not have changed colors.
Answer: Mr. Sheffield needed someone to manage the kids, not necessarily babysit them. Brighton was a Bart Simpson type, Maggie was shy and awkward and Gracie had personality issues.