Minecraft server lobby

Hi i need help to build my lobby for my minecraft server PlayTeam it is a recreation of a server named GameTeam if theres someone fromCZ/SK i need help with the lobby i would credit you on the map /lobby i need to recreate a lobby from this video https://www.youtube.com/watch?v=2GNvKKtvjUc and also the place where you log on/register. Thanks if someone is going to hep