Need help setting priorties for different Vlans

[BigTy]

What I have is two wans one lan, my second wan is set only to have a single device send traffic through it and if down fail over to the second wan. On the second wan I have all staff traffic, and guest network traffic passing through. The traffic is broken into two different Vlans staff traffic and guest traffic. I was able to set the limiter on the staff traffic and also on the guest traffic. My last step which I cant figure out is how to set the priority on this wan so the the staff traffic takes priority over the guest traffic.

Thanks for any help.

[BigTy]

Does anyone have any guidance on this question?