Allied Telesis AT-S84 - Manual (Page 269)

AT-S84 Management Software User’s Guide
Section II: Web Browser Interface 269
3. To change the egress priority queue assignment of an 802.1p priority
class, click the dialog circle of the queue for the corresponding priority.
For example, to direct all tagged traffic with a priority of 4 to egress
queue 3 on the ports, you would click the button for queue 3 in the
priority 4 row.
4. Click Apply.
Note
The switch does not alter the original priority level in tagged frames.
Frames leave the switch with the same priority level they had when
they entered the switch.