Except as otherwise provided in this part, the following provisions of the Commission's rules relating to reparations contained in part 12 of this chapter apply to this part: § 12.3 (Business address; hours); § 12.5 (Computation of time); § 12.6 (Extensions of time; adjournments; postponements); § 12.7 (Ex parte communications in reparation proceedings); and § 12.12 (Signature).