Customary home occupations, including dressmaking, millinery, laundry, seamstress and tutoring, limited to a single pupil at a time, including instruction in violin, piano or other individual musical instrument, and babysitting, limited to care for up to two children per day for a maximum of 12 hours per day for a maximum of five days per week; provided, however, that such use shall be permitted only where conducted by the person residing on the premises.