The standard default installation does not activate the Priority field. This helps to keep things simple and ensure that the plugin is ready to be used immediately after installation. But its easy and quick to enable and customize.
Unlike other products, you can completely customize your drop-down list of priorities. Instead of a generic 1 – 3 or 1 – 5 scale, you can make the priorities whatever you like.
After you turn on support for the Priority field there will be a new menu option under tickets called Priorities. You can add a new priority by going to TICKETS->PRIORITIES.
Some examples are: