Withdrawal of persons from competent authority when child is examined as witness

If, at any stage during the course of a trial of a case or proceeding in relation to an offence against, or any conduct contrary to, decency or morality a child is examined as a witness the competent authority trying the case or holding the proceeding may direct such persons as it thinks fit, not being parties to the case or proceeding, the legal practitioners and the officers concerned with the case or proceeding, to withdraw. Such persons shall then withdraw. If any person refuses to withdraw, the competent authority may have him removed and may for this purpose, cause to be used such force as may be necessary.