The Medical bay has a single door, but most of the people are outside of it, standing in the hall. There are ultimately four ways to leave that hall system, but where is there really to go?
rough map of hallways
The strait halls dump into pod rooms and restroom areas, while the round halls have various rooms coming off of them, Including the medical bay, a gym, A "elevator lobby" quite close to the center, and various work-spaces, all seemingly equipment oriented.
When She asks Heera about exits, it turns out there is a second floor to this structure under this level, and a lot of cargo and transportation happens on the bottom floor. Lifts from one to the other are very common (the delivery system in the pod rooms are among them) but they have some to the "residential level" every 100 feet of hallway or so.
One patient needing to exit isn't moving, and the table moves her down the hall on its own.
Another is supposed to be leaving, but she keeps on spasming, and nearly falling off the table. She is making weak noises. Heera directs Olive to help the table strap her safely so she doesn't fall off.
How will she return the roamers to the queue? Its easy to find them, but then what?