A PS or an APS is always in attendance with the minister at every official meeting or event to provide support; and to ensure that a member of the Civil Service, who are non-political appointees, takes a factual note of discussions and commitments made. They also have ownership of the ministerial diary, managing the minister's time with the diary secretary. This means prioritising invitations, commitments, policy briefings and submissions and parliamentary business. A PS is always the initial source of advice to Ministers on policy, parliamentary protocol, the process of cabinet government and departmental administration.