3.—(1) Waiting times are to be calculated by a responsible Health Board in accordance with this regulation and regulations 4 to 6.
(2) The calculation of waiting time starts from the date on which the patient agrees to proceed with the agreed treatment.
(3) However, where a patient is indefinitely unavailable for such treatment—
(a)the calculation of waiting time will not start; or
(b)where the calculation of waiting time has already started, the calculation will stop and the treatment time guarantee will cease to apply to that patient (without prejudice to any future applicability of the treatment time guarantee to that patient).