The priority level of a support ticket appears at the top of the ticket correspondence screen, to the right of the subject.
To change it, begin by clicking on the priority level.
From the dropdown menu that appears, choose a different priority level by clicking once.
You will now see that the priority level badge has changed.
A note has also been left in the ticket correspondence, confirming who changed the priority, when they did it and what level it’s been changed from and to.