The commission shall choose a city clerk who shall keep the records of the commission and perform such other duties as may be required by this charter or by the commission. The city clerk shall be chosen for an indefinite term but may be removed at any time by a majority vote of the commission.The number of assistants and other employees in the office of the city clerk shall be fixed by ordinance, but all such assistants and employees shall be appointed, and may be removed, by the city clerk.