Shifts: You'll work 12-16 depending on length of month and number of sub-Is. You will have the option of one being an 8-hour EMS ride-along. There is some flexibility, but you are encouraged to align your shifts with the residents', that is at Hopkins Sa/Su/Wed are 7-7, rest are 7-3, 3-11, 11-7 and all shifts at Bayview (more of a community hospital) are 7-7. The sub-Is work out their schedules as a group. You will have a mix of Hopkins and Bayview shifts.
At Hopkins, the sub-Is get a room with 4 beds which they manage under one of the senior residents, who is responsible for half the patients in the ED, so typically your resident will be in and out while you stay in the room (a little scary, but cool) and will check on you periodically and co-sign your orders. You will be the one talking with consults, radiology, writing orders, d/c papers, etc. They are available by overhead pager and text pager, and another resident is across the hall if you need him or her. You also can help out with medical and trauma critical care cases when they come in.
At Bayview, the sub-Is do more or less the same thing as the clerks, but your resident and attending should give you more responsibility.
In both cases you should be presenting all your patients to the attending. Some residents want you to present to them first, others will tell you to present directly to the attending.
Hope this helps. They'll tell you what you need to know beforehand. It's a great month!