A question for Jundo and all:

In a monastic setting, who determines the work duties for the monks? Do they get to choose what "chores" to do, or are they assigned specific tasks by someone else?

Just curious because I'm making an effort to make a samu period a part of my daily routine but I'm trying to figure out how to organize the tasks into a coherent weekly schedule. I don't need to do things like they do in a monastery, but I would like to attempt to be true to the spirit of the practice. I feel like the retreat we did in the fall prepped me fairly well for how to do samu with the right attitude, but I want to get some kind of regular work period arranged. Also, does charity work like Jundo suggests happen in other zen sanghas, or is that a Western, engaged-Buddhist spin on the traditional idea of samu?

Any help would be appreciated,