When your tama is a baby to a teen, you rely on the king to bring you gotchi points. When your tama becomes an adult, then that's when they get part-time jobs and get money for preforming concerts. I don't know exactly when the king comes, but he usually comes daily to bring you gotchi points. You kind of have to make it last until he comes back again, since you have to keep buying food for your tama when it becomes a teen.