An undertaking under section 577C comes into force:
(i) the decision to accept the undertaking is expressed to be subject to the occurrence of a single specified event within a specified period; and
(ii) the event occurs within that period;
(i) the decision to accept the undertaking is expressed to be subject to the occurrence of 2 or more specified events within a specified period; and
(ii) each of those events occur at the same time; and
(iii) that time occurs within that period;
(i) the decision to accept the undertaking is expressed to be subject to the occurrence of 2 or more specified events within a specified period; and
(ii) each of those events occur at different times; and
(iii) each of those times occur within that period;
at the last of those times; or
(d) if the decision to accept the undertaking is not expressed
to be subject to the occurrence of one or more specified events within a
specified period--when the undertaking is accepted by the ACCC.