Our rotation began with a one hour intro to the department and radiation oncology with one of the chief residents. From there each student was assigned a team, though it was flexible--i.e. if you wanted to see something different you were welcome to move around. There was a meeting during the rotation with the PD to make sure everything was going okay and you were getting what you wanted from the rotation.
On the day to day I would see all new consults for the attending I was assigned to. The resident was shared between two attendings and since both services were pretty busy I felt like I could really lend a hand. Things are structured this way--the busier services tend to get students so they can help out. I would write the notes for all new consults, the resident would review and tweak them a bit, and then they'd be forwarded onto the attending. On the OTV days I would try to see the patients before the attending. I would often see all of the follow-up visits and present them to the attending directly as well. I would offer to write notes or those, but students aren't allowed to enter notes into the EMR and the attendings have quick macros that take care of a lot of the note writing. It was so busy that I didn't worry about making sure I did notes for all the OTVs and follow-ups. When there was any down time I would contour, usually normal structures. At the end of the rotation each student had to give a presentation to their team.
I think this is the best way to structure a rotation. I know some rotations out there are structured with the student going from team to team over the month to get a broad exposure. But, the one thing we need from a rotation is a letter of recommendation, and that structure typically doesn't allow one to work with one attending long enough to get a LOR.