Begin in the PetExec menu under Employees-->Maintain Employee Types.
To delete and employee type, click on the Delete button.
To maintain an employee type, click on the Edit button.
Make the necessary changes and click the "Modify Employee Type" button to continue on to the sub-menu level. (You can also click on the "Modify Menu Items Only" button to make changes on a sub-menu level.) Toggle any menu items as needed and click on the "Modify Employee Type" button to save your changes.