One of the main responsibilities of the usher is to insure that the liturgical service is celebrated without distraction. They participate in the preparation of the church for mass. They greet the people and seat those in need of help. They respond to emergencies that may arise. During the liturgy, they take up the offertory collection and present it to the celebrant. They arrange for the gift bearers. Following mass, they "police" and secure the church. The ushers are an essential part of the liturgical ministry team. All parishioners are welcome to join.