- Make yourself OP: in the panel Console, run
op YourMinecraftName. - Whitelist: run
whitelist on, thenwhitelist add Namefor each player. - server.properties: edit it in Files for MOTD, difficulty, gamemode, view-distance, PvP, max-players, spawn protection and more. Restart to apply. The port is managed by the panel; leave it alone.
- Upload your own world: stop the server, upload the world folder, set
level-namein server.properties to the folder name, start.
Server-side optimisation: Paper's config/paper-global.yml and paper-world-defaults.yml, plus spigot.yml and bukkit.yml, control performance settings.