What you can do is use the Server admin tool (https://www.nomachine.com/server-admin) to access your node servers and upload the license files.
Otherwise you can automate the procedure by means of a bash script which executes the appropriate command for each node.
On Linux and macOS:
sudo /etc/NXnxserver --subscriptionset [--target ]
On Windows:
cd C:\Program files (x86)\NoMachine\bin\
nxserver --subscriptionset [--target ]
Subscriptions are by default 1 year. Of course, we also provide for multiple years, please contact our Sales Department.
https://www.nomachine.com/AR03D00367
With the release of version 9, licenses will become “online” so that you install once and don’t have to update each license file after the expiry. The validity of the license will be checked by our licensing server.