A network system comprising node devices configured to be distributed in a structure and to self-form separate network groups; and a control commissioner device having a system coordinator device that is configured to communicatively couple with the node devices, the system coordinator device also configured to control formation of the separate network groups of different groups of the node devices by restricting which of the node devices can communicatively couple with different local coordinator devices, wherein the node devices of each of the separate network groups are configured to communicate with the local coordinator device associated with the network group.