When you create, build and run a fuji integration application projects in netbeans using fuji maven archetypes, the fuji maven plugin creates a distribution that consists of the application(service assembly), required jbi components, jbi framework and the felix runtime and starts the felix runtime from maven to run your integration application. This structure is suitable for running single integration application quickly. But, how do you want to run multiple integration applications in the same runtime? For that, you can use the Standalone Fuji runtime and deploy multiple applications along with the required components to it.
If you want to manage the Standalone Fuji runtime from netbeans, See FujiStandaloneTools page on how to setup the netbeans and standalone fuji runtime for that or watch this video
.