Defining Your Environment with the Runtime Manager - jBPM6 Developer Guide - page 242

The resulting functionality is a KIE session that is registered on a by-process-definition
basis, making a runtime structure similar to the one shown in following figure:
Later on, we can construct a new Per Process Definition Runtime Manager by calling the
factory method in the CustomRMFactory class, as shown in the following code:
RuntimeManager manager = CustomRMFactory.getInstance().
newPerProcessDefinitionRuntimeManager(
environment, "node-ID");