Assign livery to my aircraft

Gd day all, I am new, recently registered in vatsim, I want to understand how to assign a livery ti my plane. What is the correct procedure,
many thanks in advance.
Roberto

Depends on which pilot client you are using. The client talks to the server.

If your using xPilot or vPilot as your Pilot-client, it is not necessary to assign a livery. The client just get the information from the callsign which Livery should be loaded. If it can’t find any livery that matches the callsign, it just pick a random one.