This is the Control Desk. One nurse is assigned the role of "Controller" for the day, and it's their job to assign patients to each nurse, and try to ensure everyone's having their treatment on time. The latter seems to be an impossible task, mind you. I don't think anyone at the hospital can protest at me pointing this out; I can count on one hand the number of days I've been seen on time in Adult, and I've been in approximately 75 times.
So, if you have a question about your treatment (usually, where is it, it's hours past my appointment time and no one's called me!) you ask the people sitting here. You're supposed to ask at reception, but they never seem to know anything, so after a while you just go straight to the Controller. They don't usually know why you've been waiting for four hours either, of course, but sometimes they actually make phone calls to try and find out.