HTB Using Multiple Local Interface

Is it possible to create an HTB in Queues with Multiple LANs?

My scenario is I have set-up my ISP in Eth01. I have 2 LANs one from Eth6 and Eth7. The reason I need HTB is because I have different types of users from these local interfaces that require MIR, CIR and Prioritization. I can’t seem to find instructions on how to do this and I can’t seem to make the 2 local interface recognize the Eth01 from the Queue Tree.