You can adjust category's name and section on this page.
You can also edit user permissions for this category. When you grant a user permissions for a category, the user becomes a "technician" for the category.
Technician - is a user who is permitted (by an administrator) to handle tickets in one or more categories. A technician receives email notifications about every new ticket in a category. NOTE: To make a user a technician you have to "grant" him permissions to handle tickets in some category. This is done through the category editing form in the admin section.