If your host uses Multicraft, there will be a dropdown menu on your server home page, which will let you choose between different .jar files and modpacks. Once you have chosen the version of Minecraft, you would like to run just choose the appropriate server installation from the dropdown menu in Multicraft or from the download page of the installation you want. You can also drop your own .jar into the server files and point the server to it either by editing the configuration files (not recommended) or by typing the full name of the file into the âcustom .jarâ option available on your serverâs home page. Your banned-players.txt list is a useful tool for combatting malicious users, and the whitelist.txt file may be used to block all players except those listed. On a default server, players are assigned as operator or administrator by using the /op command, or by editing the ops.json in the server directory, then restarting the server. Spigot and Paper are the most common installations available for using Plugins.