The Department Setup screen allows you to make changes to the default options for Products in that Department, including taxes, label preferences and printing preferences. It also allows you to enable certain functionality related to the Department, such as Sales, Pricing Levels, and the Touch Add functionality.
Begin on the Products Dashboard, and select the Departments button at the top of the screen. 
Once on the Departments/Class screen, a list of your Departments will display, along with the default tax for each of those Departments. Select one of these Departments.
Once navigated to the Department Setup screen, select any of the tabs containing your desired setting or preference. At the left side of the screen, you can also create Categories specific to this Department to break down your Products organization even further.
