Question regarding traffic shaping to a single machine

[halcyon]

I am running an OPNSense Custom Router out of an HP 8200 Elite, onboard NIC, secondary NIC, and an Intel 4 Port NIC.

Modem --> WAN --> LAN (vlan10) --> Cisco 3750 trunk

What I have not found yet, is where I would go to prioritize traffic for a specific device?

Is there a plugin, perhaps, for the OPNSense to talk to the Cisco to gather information directly?