Each support staff employee will serve a probationary period of six months in any position for which he/she is newly hired or in any new classification to which he/she is transferred or promoted. During that time, the employee will be adequately assisted and supervised so that his/her abilities to carry out the duties required, and job performance, may be ascertained. Should his/her performance be unsatisfactory, a new employee may be released at any time during the probationary period, or an employee who has been transferred to a new classification may be returned to his/her former position.