If you have level 1 routerOS, and make use of scripting to add IPs of users exceeding a certain amount of downloaded data to simple queues to limit speed, will the queues be added? Level 1 can only accept 1 queue so when the script execute to add the second queue to throttle the IP it will be denied
IF you know that only one queue is allowed, then why are you trying to add more of them?
yup,
better, when you will read and understand from this link first: http://www.mikrotik.com/software.php
to find features of Mikrotik's Router Operating System.