154 but the person or authority is not obliged to follow any recommendations made by the other person. 18.23 Appointments (1) Except as otherwise provided in this Constitution, a power under this Constitution to appoint a person to an office includes a similar power— (a) to reappoint the person to that office; (b) to appoint a person on promotion or transfer to that office; (c) to appoint a person to act in that office; (d) to appoint a person to that office while it is held by someone else who is on leave of absence pending relinquishment of the office; (e) to fix and vary the person’s conditions of service in that office, including the person’s remuneration and period of appointment and any benefits on termination of service; and (f) subject to this Constitution, to suspend or remove the person from office. (2) Where two or more persons hold the same office as a result of a person being appointed to it while the incumbent is on leave of absence pending relinquishment of the office, the person last appointed must be regarded as the sole holder of the office. (3) Subject to this Constitution, an Act of Parliament may provide for the appointment of one or more deputies to any person holding an office under this Constitution and may provide for their functions and conditions of service. (4) Where a deputy is appointed to a person holding an office under this Constitution, the deputy may exercise any of the functions of the office whenever the office-holder is for any reason unable to perform them. (5) Subject to any provision of this Constitution that may limit the period or number of terms that anyone may serve in a particular office, a person who has vacated an office established by this Constitution may, if qualified, be re-appointed or re-elected to the office. (6) Where the approval of the Senate is required for a person’s appointment to any office or post, that person cannot exercise any of the functions of the office until the Senate has approved the appointment. 18.24 Resignations (1) Any person who is appointed or elected to an office established by this Constitution may resign from that office by written notice addressed to the person that appointed or elected the office-holder concerned, but in the case of— (a) the President, the notice must be addressed to the Speaker; (b) the President of the Senate or his deputy, the notice must be addressed to the Clerk of Parliament or announced to the Senate; (c) the Speaker or Deputy Speaker of the National Assembly, the notice must be addressed to the Clerk of Parliament or announced to the National Assembly;