The CDC assumes 1.5 - 2 people per station in a mass vaccination. It assumes 30 jabs per station per hour which meshes with a breakdown of what I know of our local region. We're scheduled to start mass vaccinating on April 12 and I know of people scheduled as late as the 22nd. That'll be 360 people per day....two health workers in other words.
From our experience that's pretty optimistic. By the time they check your paperwork, explain what vaccine you are getting, advise you of possible side effects when you will be due for your second shot and fill out your card it was at least 5 minutes. Other people may be organizing but it is the person giving the shot who is ultimately responsible for everything being in order.