If my son were to commit himself as an affiliate to the brotherhood, would his expenses be covered or would he need to fundraise? What happens to his income?

When a man first becomes an affiliate, he enters no financial obligations but retains full responsibility for his finances. Even when he first moves into a house of the brotherhood, he is only expected to “earn his keep,” in other words his work or service needs to cover his expenses. Once he enters formation, he becomes an “in-common” brother, i.e. his income and expenses are administered jointly by all the brothers.