How to setup a dedicated bandwidth in MK router

Hello Experts in the house! i am seeking your help on how i can setup a dedicated bandwidth for a user who’s ip address is bypassed on the hotspot. we are having 3m/1m bandwidth from our service provider, and we have about 45 people sharing it. I want to dedicate 512k/256k for a particular user who is using a static IP address on the same subnet with the other users whose IPs are dynamically change. Please i need someone to help me out on how i can achieve it.
Thanking you all in advance as i await your quick response.

Hello,

After you read this http://wiki.mikrotik.com/wiki/NetworkPro_on_Quality_of_Service do you have any further questions?

Thanks.