ride herd

She says she is going to help ride herd, and I am going with her.

Seems a pity-like we cant ride herd on em till some Eskimo shows up to claim em, said Art.

You go back to your cattle, Rattlesnake, and leave me to ride herd on Calamity.

If Jed has to ride herd, Molly's got to take care of that team of big mules, and drive 'em all day in the light wagon too.

You're going to ride herd on Hampton while I do something else.