expedite queue

I trying to configure a cat 3550 to use QoS, I need to enable the expedite queue and not sure how to carry this out, I have seen mentioned wrr-queue bandwidth 1 2 3 4, how do I make 4 the expedite queue

Thanks

Chet

many thanks, do I leave the wrr-queue bandwidth 1 2 3 4 as it is and use priority-queue out or do I drop the queue 4

Chet

Use Auto QoS and make sure you add the above command.

Jonathan