Decides also that the list of speakers for the debate in plenary shall be organized on a first-come, first-served basis. The order of precedence shall be as follows: (a) heads of State/heads of Government; (b) Vice-Presidents/Crown Princes or Princesses; (c) Deputy Prime Ministers; (d) the highest-ranking official of the Holy See and Switzerland, in their capacity as observer States, and of Palestine, in its capacity as observer; (e) Ministers; (f) Vice-Ministers; and (g) chairmen of delegations. Should the level of representation change, the replacement speaker will be accommodated in the last position available in the appropriate category;