Several connected networks
Your organization might have several networks that are connected by a wide area network or similar. To provide clients with a source of permits on their network, connect a server to each network and install enough permits for users of that network. To provide clients with a secondary source of permits, configure the server list on each client to include servers on other networks.
This deployment scenario provides users with a secondary source of permits if the server on their network is unavailable or all permits are in use.