Creating instances is part of the iterative process of developing a Protégé-2000 project. Before you create instances, you need to have created and organized the classes and slots that model your knowledge base structure.
Creating instances can give you valuable information about the project structure and its applicability. As you add instances to your project, you may expose missing or redundant areas which tell you that you need to redesign some of the class/slot structure. However, as you move classes and create and delete slots, you may lose information in your instances. In addition, it is difficult to split a single instance into two or more instances. Therefore, you should not add an extensive base of instances until you believe the structure of your project is fairly stable.
There are two ways to create an instance:
Creating an instance from the Direct Instances pane creates the instance directly in the selected class. To create a new instance from the Direct Instances pane: