There is no automated process for stopping BusinessConnect (BC) engines outside of the Administrator. The Administrator can shut down the engines via the Hawk microagents in the engines. You can also use Hawk to stop the engines, and write a rule that invokes the stopApplicationInstance microagent inside the BC engine. With regard to Administrator, there is no automated method. The kill command sends a signal to the process that tells it to terminate, which most TIBCO components handle gracefully. The alternative "kill -15" will signal the Administrator to shut down (kill -15 is the default for kill) and will allow the Administrator process to gracefully terminate.