I assume you're talking about the console command, in which case, it is used in the following way:
serverConnection.chaseCam(###);
Replace "###" with a number. The number is the amount of milliseconds in delay that the third-person camera will have in following your player. If you enter "serverConnection.chaseCam(99999);", the delay will be something like 15 minutes, if I remember correctly. "serverConnection.chaseCam(0);" will reset the follow delay to 0, meaning that there will be no delay in the camera following your player.
