If you are having the access rights of workitem configuration, then you will able to add/remove workitem priority. By default Quickscrum provides five types of workitem priorities as shown below.
To add a workitem priority,
1. Click on Add Priority.
2. Give an appropriate name.
3. Select a system-generated icon.
4. Click on Save.
Users can delete any priority type. To delete any priority type click on Delete icon.
Priority Type Name:
Name the workitem priority, that you have added for instance: High.