This branch of the Dunder Mifflin Paper Company has yet to be featured in an episode of The Office, however it was mentioned in the episode Branch Wars as a branch that has a bad reputation, just not as bad as that of Scranton. The branch's bad reputation likely comes from the fact that Camden, NJ has for several years been considered one of the most dangerous cities in America.
As of yet, unknown.
In the episode, Survivor Man, Toby mentions that a man named Mark Chisholm attended Ryan's wilderness retreat, indicating that Chisholm is a regional manager. It is possible that he is the regional manager of the Camden branch, though he could be the regional manager for Rochester, Nashua, Akron, or Yonkers.