1. Start the Administrative Console.
  2. On the main menu, click LDAP Schema.
  3. On the Schema Editor, click the Object Classes tab, and then click New located in the bottom left of the window.
  4. Enter the properties for the new objectclass. In the Attributes box, filter the types of attributes required for the new object class. Click the right arrow to move it into the Required or the Optional box. All custom attributes appear at the bottom of the list in the Attributes box.