The Superior Court shall be divided into an Appellate Division, a Law Division, and a Chancery Division, which shall include a family part. Each division shall have such other parts, consist of such number of judges, and hear such causes, as may be provided by rules of the Supreme Court. At least two judges of the Superior Court shall at all times be assigned to sit in each of the counties of the State, who at the time of their appointment and reappointment were residents of that county provided, however, that the number of judges required to reside in the county wherein they sit shall be at least equal in number to the number of judges of the county court sitting in each of the counties at the adoption of this amendment.