Dress code for authorised representatives requires professional black-and-white attire, with a seasonal dispensation for coats. Rule requires authorised representatives, other than a relative or regular employee, to appear in professional dress or, absent that, males in a black coat with white shirt and black tie and females in a black coat over a white sari or other white dress; a summer dispensation allows omission of the black coat; 'regular employee' excludes a departmental officer appointed as authorised representative.