Service Classes, together with Service Types are used to determine default hourly rates for work on service orders. Each employee or subcontractor (vendor who does service order work for you) works at a certain CLASS usually.
From the Main Menu, select Admin -> Setup Orders -> Service Classes.
Your screen should look similar to this:
If editing, choose a service class from the drop-down menu and click Edit.
Click Add to create a new service class.
Whether adding or editing your screen should look similar to the following:
Service Class: Enter or edit the service class name.
Click the Save button to save changes.
If editing, click the Delete button to delete the Service Class.
Click the Back button to return to previous screen without saving your changes.