Idiom: backseat driver
Backseat driver = a bossy person who tells others what to do; a person who gives unwanted advice and direction.Usually rich people used to ride in the backseats of chauffeir – driven cars. The backseat passenger gave orders to the driver where to go,what road to take, how fast to drive.
“I can fix this computer myself, but she always tries to be a backseat driver.”
It is some kind of micro-management, I’d think. In either case, I don’t like it 🙂