WordNet
ride herd
v. driving animals such as horses and cattle while riding along with them; "Joe was riding herd during the day"
Usage examples of "ride herd".
These tame goats who ride herd around here aren't like the high-top clans.
Bert used to be president, says now he'd rather ride than ride herd.
Once that's done, I'll let the technical manager handle sound, and go ride herd on the actors.
Some of the other men bet me that I could not ride herd all day like that.
I had to virtually ride herd on her constantly to keep her from proudly announcing her son's eminence.