MessageCreator

game.Players.PlayerRemoving:Connect(function(plr)

    game.StarterGui:SetCore("ChatMakeSystemMessage", {

        Text = plr.Name .. " has left!",

        Color = Color3.fromRGB(255, 115, 0),
        Font = Enum.Font.SourceSansBold,
        TextSize = 18,
    })
end)