Jamieson, Fausset and Brown on 2 Chronicles 35:5

5. stand in the holy place--in the court of the priests, the place where the victims were killed. The people were admitted according to their families in groups or companies of several households at a time. When the first company entered the court (which consisted commonly of as many as it could well hold), the gates were shut and the offering was made. The Levites stood in rows from the slaughtering places to the altar, and handed the blood and fat from one to another of the officiating priests (2Ch 30:16-18).