Each Link client can act as both a user and as an administrator of a network group. Additional services can easily be added.
Administration is beyond trivial.
Place the small binary where you'd like, start it and forget about it for months. Everything just works. It talks to your database, your system libraries, and interoperates with other installed software on the box while paying attention to back up recovery. See the Serve Architecture for more detail. Groups Anyone can create and run a group with ease.