The Officials who are to serve in the Technical Office are selected via a selection process based on merit. The selection criteria are outlined in the announcement of the selection process. Officials who are not members of the Judiciary or the State Prosecutor's Office must belong to the Body of Judicial Administration Clerks or be civil servants in Public Administrations or constitutional bodies, holding a degree in Law, pertaining to Subgroup A1 or equivalent.

The Standing Committee of the General Council of the Judiciary will announce the opening of the selection process, at the proposal of the President of the Supreme Court, who will previously hear the Governing Chamber to establish the selection criteria.

The President of the Supreme Court, having heard the Presidents of the Chambers and the Director of the Technical Office, will submit the proposed candidates to cover vacancies of Technical Office Officials to the Governing Chamber for approval. The President of the Supreme Court will bring the proposal of the Governing Chamber of the Supreme Court before the Plenary of the General Council of the Judiciary so it may proceed with appointing the candidates who will occupy the posts of Technical Office Officials.

The officials who are selected will be appointed for a period of one year. Once this period has elapsed, the President of the Supreme Court, having heard the President of the Chamber in question and the Director of the Technical Office, will, where applicable, propose an extension of the term of office, following the same procedure used for the initial appointment. Officials can be renewed for successive three-year terms. Notwithstanding the above, Officials may be dismissed by the President of the Supreme Court for a serious breach of duty.