When a person's medical condition is established and the directorate of medical policy says that the person's limitations do not breach universality of service and there are occupations in which positions are available, at that point the person is offered the opportunity to train in order to assume an occupation, as you mentioned, as an administration or finance clerk, a cook, or something of that nature. They would then be given the training and begin to serve in that new occupation.
On February 25th, 2014. See this statement in context.