I don't know if Charles in Charge was ever a real sitcom. The format was that of a sitcom, but I think it was syndicated from the start, or at least close to it. Kind of like Saved by the Bell. Back before Netflix and Youtube, niche markets were targeted on independent networks or on weekend mornings. I used to watch this show Saturday mornings. It was basically a hipper version of Who's the Boss?, made for all those who did not fit the demographic of that #1 hit show, like my sister, who thought Scott Baio was so much hotter than Tony Danza.
Anyhow, the premise is just as flawed as the show it copied, with a male college student acting as nanny for both boys and girls. Just think about the theme song. "Charles in charge of our days and our nights. / I want Charles in charge of me." The whole situation is like a social services nightmare come to television.