What does 1 Chronicles 9:22 mean?

Altogether, there were 212 men chosen as gatekeepers for the entrances. They were listed in their family records and assigned to their positions by David and Samuel the prophet. 1 Chronicles 9:22 - Modern Text Bible

(A total of 212 men were chosen for gatekeeping, and their roles were carefully assigned by King David and the prophet Samuel, showing the importance of order in worship.)