By using the Set Skill module which allows to change the skill of AI entities for example when a trigger was activated. Headless clients (HC) are game instances that run without graphics, used to offload AI processing from the server. See. This page contains useful information on how to install and configure an Arma 3 server and includes step by step guides of the install process. The majority of directories and paths are customisable, however those defined are all consistent. The first thing to make sure of is to know how to open the command menu to begin with. (~) Once you have it open, you should see a list like this. Get your Arma 3 server up and running in minutes — instant setup, DDoS protection, and 24/7 support included.