What does 2 Chronicles 31:14 mean?

Then Hezekiah commanded them to prepare rooms in Yahweh’s house, and they prepared them.

They brought in the offerings, the tithes, and the dedicated things faithfully. Conaniah the Levite was ruler over them, and Shimei his brother was second.

Jehiel, Azaziah, Nahath, Asahel, Jerimoth, Jozabad, Eliel, Ismachiah, Mahath, and Benaiah were overseers under the hand of Conaniah and Shimei his brother, by the appointment of Hezekiah the king and Azariah the ruler of God’s house.

Under him were Eden, Miniamin, Jeshua, Shemaiah, Amariah, and Shecaniah, in the cities of the priests, in their office of trust, to give to their brothers by divisions, to the great as well as to the small;

besides those who were listed by genealogy of males, from three years old and upward, even everyone who entered into Yahweh’s house, as the duty of every day required, for their service in their offices according to their divisions;

and those who were listed by genealogy of the priests by their fathers’ houses, and the Levites from twenty years old and upward, in their offices by their divisions;