Except as otherwise provided herein, the entrance salary for employees new to County service shall be the minimum salary for the class to which he/she is appointed. When circumstances warrant, the Director of Human Resources may upon recommendation of the department head approve an entrance salary that is more than the minimum salary. The Human Resource Director’s decision shall be final. Such a salary may not be more than the maximum salary for the class to which that employee is appointed unless such salary is designated as a “Y” rate by the Board of Supervisors.