At the time the motion picture production company is certified by the department, it may make an irrevocable assignment of future payments attributable to the rebates made pursuant to § 12-62-40 or 12-62-50 to a designated trustee. For purposes of this chapter, "designated trustee" means the single financier or financial institution designated by the council to receive all assignments of payments made pursuant to this chapter and to the terms of an agreement entered into by the qualifying motion picture production company. If a qualifying motion picture production company elects to assign payments to the designated trustee, the election must be made on a form provided by the department, including a waiver of confidentiality pursuant to § 12-54-240, and the payments may be paid only to the designated trustee. The qualifying motion picture production company must file an application for the assignment with the director no later than thirty days after filming begins in South Carolina.