Multi-process Swarm nodes are servers that contain multiple CPUs where each CPU can be defined as a new node process. That means that in the Admin Console you will see an entry for each CPU when you have configured the processes configuration parameter and also multiple IP addresses (1 per process) in the node.cfg file. This mode allows you to use each core in your multi-core server to process Swarm software. The CSN does this automatically without manual configuration.
You may not reboot a single process at a time in a multi-process node. If you navigate to an individual node in the Admin Console and choose restart, all of the processes on that node will restart. Unless you choose to restart the cluster, however, this action will not restart any Swarm processes that exist on different physical servers.