(Parties)
Reference to parties in this Act refers to petitioners and respondents in cases governed by:
(1) Chapter III (constitutionality of laws and constitutional complaints): the highest state organ, the Legislators, the court, and the person lodging a petition;
(2) Chapter IV (disputes between constitutional organs): the petitioning highest state organ and the respondent organ;
(3) Chapter V (impeachment of the President or the Vice President): the petitioning impeaching authority and the impeached;
(4) Chapter VI (dissolution of unconstitutional political parties): the petitioning authority and the respondent political party;
(5) Chapter VII (local self-government): the petitioning local self-government body or the petitioning legislative or executive authorities thereof; or
(6) Chapter VIII (uniform interpretation of statutes and regulations): the person lodging a petition.
The competent authorities in charge of the impugned laws or the authorities otherwise designated by the Constitutional Court shall be regarded as the respondent under the preceding Paragraph.

(Appointed and Designated Petitioners)
Multiple petitioners may appoint no more than three persons among themselves as the appointed petitioners to lodge the petition on behalf of all the petitioners; provided that the withdrawal of the petition requires the consent of all the petitioners.
In a petition where there are more than ten petitioners and none is appointed to act on their behalf according to the preceding Paragraph, the Chamber may order the petitioners to make the pertinent appointment within a specified period of time. If the petitioners fail to do so within the specified period, the Chamber may make the appointment sua sponte.
When any of the appointed or designated petitioners has lost her or his capacity to represent due to death or for any other reason, the remaining appointed or designated petitioners may conduct acts of litigation on behalf of all the petitioners. When there exists no other appointed or designated petitioner, the provisions of the preceding Paragraph shall apply mutatis mutandis.
After appointed or designated petitioners are in place in a petition pending before the Constitutional Court, the rest of the petitioners shall be withdrawn from the proceeding.

(Advocates)
Parties may appoint attorneys as their advocates. For oral argument sessions, the parties must appoint attorneys as their advocates except in cases where
(1) the parties, their representatives, or their statutory agents have the qualifications of judges, attorneys, or advocates as provided for by Paragraph 3, Subparagraph 1;
(2) the respondents are those referred to in Article 6, Paragraph 2; or
(3) the impeached has appointed defense counsels.
Each party shall appoint not more than three advocates.
A person who is not an attorney may act as an advocate if she or he holds one of the positions below:
(1) professor, associate professor or assistant professor of law; or
(2) the legal officer of a party which is a legal person under public law, an authority, or an unincorporated association under public law.
Appointment of persons who are not attorneys as set out in the preceding Paragraph as advocates requires the permission of the presiding Justice of the Constitutional Court.
In cases set out in Paragraph 1, Subparagraph 1, qualification certificates must be produced; in cases where attorneys are appointed as the advocates, the powers of attorney and the appointees' qualification certificates must be produced.
An advocate may not appoint a sub-agent.