Whenever a horse is scratched or declared a nonstarter, and a refund is required under these rules, the tickets previously issued designating such horse shall be refunded or, at the option of the holder, may be exchanged for another selection of the same denomination in the same pool provided the track has an operating facility for such an exchange and conditions and circumstances, including available time remaining before the start, make an exchange feasible in the judgment of management. Refunds and exchanges shall be made at locations designated for the purposes by management and convenient for the public.