rule the roost

rule the roost {infml} (to be the person who makes all the decisions in a group; to be the boss or manager, especially at home; to be the most powerful member of a group) — командовать, руководить, распоряжаться, верховодить; заправлять всем; быть хозяином (в доме); верховенствовать, главенствовать

Example 1: Who rules the roost at your house? (thefreedictionary.com)

Example 2: In that family it is the grandma who really rules the roost.(CALD)
Example 3: Jimmy might be the boss at work, but at home it's his daughters who rule the roost. (thefreedictionary.com)

[king of the castle]