The studio manager has the responsibility of managing the studio facilities for recording productions.
The studio coordinator supports the studio manager in the day-to-day running of the studio facilities.
The studio assistant, sometimes known as a runner, supports the studio manager and studio coordinator by taking on many of the day-to-day jobs that come up all the time in a busy studio facility.
Scene hands are part of the team that sets in the scenery for a production in a studio or on an outside broadcast.