Sitecom N600 X5 User Manual page 56

Edit a QoS rule Select the rule you want to edit and click "Edit", then enter
the detail form of the QoS rule. Click "Apply" after editing the form and the
rule will be saved.
Adjust QoS rule priority You can select the rule and click "Move Up" to
make its priority higher. You also can select the rule and click "Move Down" to
make its priority lower.