31.This section enables certain types of person, body and office-holder to be added to the list in schedule 5 and existing entries removed, and allows corresponding entries to be added to, or removed from, schedule 6. The types that may be added are: office-holders in the Scottish Administration; Scottish public authorities with mixed or no reserved functions (other than local authorities); cross-border public authorities; publicly-owned companies; and any other person who appears to exercise functions of a public nature or otherwise provides a service under contract which is a function of a body listed in schedule 5. In relation to the latter, the functions of a public nature or services being provided must be specified, and only these functions or services are public functions of the body for the purposes of section 14.