communicate his decision in writing to the Court through the Vice President, or, failing that, through the Senior Member of the Court. If the Vice President decides to resign from his office, he/she shall communicate his/her decision to the President. Rule 13 Adequate gender representation, main legal traditions and main regions of Africa In electing to office or making appointments governed by this Chapter and Part II of these Rules, the Members of the Court shall pursue, to the greatest extent possible, a policy aimed at securing a balanced representation of gender, the principal legal traditions and the main regions of Africa. CHAPTER III – INTERNAL FUNCTIONING OF THE COURT Rule 14 Ordinary Sessions 1. The Court shall hold four ordinary sessions per annum, each of which shall last about fifteen days. 2. The sessions of the Court shall be convened on the dates set by the Court during its previous session. Under exceptional circumstances, the President may, in consultation with the other Members of the Court, change the dates of a session. 3. The invitation letter shall indicate the dates, agenda, duration and venue of the session as well as any other relevant information. The letter shall be sent to the Members of the Court at least thirty (30) calendar days before the session is held. 11