(2) Without prejudice to the generality of section 4, a licensee who is a property services employer shall not authorise or permit a licensee who is a principal officer or employee of the employer to provide a property service in his or her capacity as such principal officer or employee, as the case may be, unless there is in force, at the time of the provision of such service, a policy of professional indemnity insurance which adequately covers the principal officer or employee, as the case may be, in the provision of such service.