Tutorial: Getting Started with Protege-Frames
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Creating the Employee class
Now we will to create another class, Employee. An Employee is any employee of the newspaper, whether or not they are an Author. Note, however, that we are only interested in employees who are somehow involved in generating and managing newspaper content. One of the choices you make in designing an ontology is what to leave out. While you want to make sure that you include all the concepts that are relevant, you don't want to complicate the hierarchy by adding classes that are superfluous. Therefore, while janitors may be technically employees of the newspaper, we would not be interested in creating a subclass called Janitor.
  1. Select :THING in the Class Browser. Although some authors are employees, we do not want Employee to be a subclass of Author. In most cases, you should select :THING to create a top-level class in the hierarchy.

  2. Click the Create Class button and rename the class Employee.