At any time after approval has been granted for a furlough to any prisoner, such approval or order of furlough may be revoked, and if the prisoner has been released on an order of furlough, he or she may be returned to a state correctional institution, or the plan may be modified, in the discretion of the secretary. Any prisoner whose furlough application is rejected may reapply for a furlough after such period of time has elapsed as shall be determined at the time of rejection by the superintendent or secretary, whichever person initially rejected the application for furlough, such time period being subject to modification.