Explanation:

Both the statements are incorrect.
First statement is incorrect. The Permanent Court of Arbitration (PCA) is an intergovernmental organization located at The Hague in the Netherlands. The PCA is not a court "in the traditional sense", but provides services of arbitral tribunal to resolve disputes between member states, international organizations, or private parties arising out of international agreements.
The organization is not a United Nations agency, but PCA is an official United Nations Observer.
Second statement is incorrect. The judges or arbitrators that hear cases are called Members of the Court. Each member state may appoint up to four "of known competency in questions of international law, of the highest moral reputation and disposed to accept the duties of arbitrators" for a renewable 6-year term. Members of each member state together form a "national group". Members may be selected in arbitration cases in which the PCA provides support. National Groups may propose candidates for International Court of Justice members