17. Only the central municipality, to the exclusion of the other related municipalities, may act with respect to those matters and subjects.
The central municipality has jurisdiction in its own territory and in the territory of any other related municipality over the acts that may be performed respecting those matters and subjects.
If a provision of an Act or a statutory instrument under that Act concerning such a matter or subject refers to the population of a municipality, the population of the central municipality is deemed to be the total population of all the related municipalities for the purposes of the provision.