This adds a server profile to your server list. This is not the server's name but a method of identifying a specific profile for your server. Use the set command to configure the rest of the server.
Example:
/as server ChatNow add
This is the first step to configuring a server profile. The name for the file can be anything, it is merely how you refer to the profile, but it is easiest if you user the server name the profile is for or something similar.