Assitant: assists in leading the service, serves as chalice bearer
Reader 1: reads the OT, reads the Psalm, and takes the offering
Reader 2: reads the NT and leads the prayers

Assistant: accompany the Celebrant in the chancel, read the Gospel, lead the congregation in the creed, and serve at communion as a chalice bearer. If there is no Reader 1 then the assistant will fulfill the role of Reader 1.
Reader 1: Read the first reading, assist the Celebrant at the table during communion, accompany the Celebrant into the sanctuary during the offertory and serve as a chalice bearer.
Reader 2: Lead the psalm, read the second reading, lead the prayers of the people, and take the offering. When an additional chalice bearer is required will bring the offering to the table and then stay there to serve during communion. If Reader 2 cannot lead the prayers of the people then it will be done by Reader 1.