The term 'supported employment services' means ongoing support services, including customized employment, needed to support and maintain an individual with a most significant disability in supported employment, that -
(A) are provided singly or in combination and are organized and made available in such a way as to assist an eligible individual to achieve competitive integrated employment;
(B) are based on a determination of the needs of an eligible individual, as specified in an individualized plan for employment; and
(C) are provided by the designated State unit for a period of not more than 24 months, except that period may be extended, if necessary, in order to achieve the employment outcome identified in the individualized plan for employment…