The overseer also of the Levites - פקיד pekid, the visitant, the inspector; translated επισκοπος, bishop, both by the Septuagint and Vulgate.
The business intended was probably the internal business, as distinct from the “outward business” Nehemiah 11:16: a part of which was the apportionment of the royal bounty among the members of the choir Nehemiah 11:23.