Kristin and James Dolan

Cablevision CEO James Dolan has appointed his wife Kristin to be Cablevision’s next chief operating officer and his brother-in-law Brian Sweeney to serve as Cablevision’s president.

Kristin has been with Cablevision for 24 years and has been repeatedly promoted, first as senior executive vice president of product management and marketing in November 2011 and then president of Optimum services — the position that overseas most of Cablevision’s day-to-day cable operations — last year. The latest promotion come at a time when Kristin and James remain separated on what they call “a trial basis.”

“Brian and Kristin have each played critical senior roles in our efforts over the past two years to reposition Cablevision as a leader in customer service and product innovation in this industry,” Dolan wrote in a statement. “[They] helped propel Cablevision forward during a time of great change.”

The promotions fill a significant hole in top management opened when chief operating officer Tom Rutledge quit two years ago to take over as chief executive of Charter Communications, poaching several former Cablevision executives as he exited. Kristin is his replacement.

Customers should notice little, if any changes as a result of the promotions. But some investors have complained that the Dolan family’s tight control over the cable company serving suburban New York City communities remains a underperformer in its operating service areas, nearly all also served by Verizon’s fiber optic service FiOS. Cablevision has been forced to spend capital on service upgrades to keep up with FiOS’ faster broadband services, as well as improve customer service to keep customers.

The original version of this story mis-identified Mr. Sweeney as Jim Dolan’s son-in-law. We regret the error.