The Manager shall have charge of and shall control the examination of applicants for licenses for taxicabs, liveries, limousines and drivers thereof; the licensing, regulation and inspection of taxicabs, limousines and liveries; the licensing of drivers; and the enforcement of all the provisions of this chapter. The Manager shall have the power to approve, deny, suspend or revoke any taxicab, limousine or livery license or the licenses of drivers of taxicabs, limousines or liveries, for cause, as hereinafter provided. The powers conferred on the Municipal Clerk by this chapter shall be exercised under the control of the Manager.