how to set QOS on RB750

Hey Guys:
i have an RB750 , and i have a PPPOE client set on it and it’s connected to my access point and works fine . now i have connected my satellite receiver to one of the Ethernet ports and now i want to set the router in a way that no matter how much bandwidth is going to other Ethernet ports , it has to dedicate 56kbps of the bandwidth to the Ethernet 3 that my receiver is connected to so it can receive cccam codes with no problem and it can always have enough bandwidth .

do you know if it’s possible to do in the router and how can i do it ?

Router OS is the same for all models, each of them have ability for QoS, check the official mikrotik wiki