Applying a QoS queue to the YouTube application signature

Go to Application protection > Applications and protections.

1. In the drop-down list at the top left side of the action bar, select the outgoing inspection profile to modify: IPS_01 default outgoing profile in this example:
   
2. In the search field, type a series of characters found in the name of the YouTube application.
3. Select the line in the signature to which you want to apply a QoS queue (signature "Multimedia: YouTube" in this example).
   A Configure menu appears in the Advanced column.
4. Click on Configure.
   A configuration window will open.
   
5. In the field QoS applied to traffic, select the queue reserved for YouTube traffic (YTB_WAN_Q in this example).
6. Confirm the change by clicking on Apply.
7. Click on Apply then on Save.