You see this page of the Add Server Instance wizard when you are creating a new personal domain and have supplied the location and admin information for the domain.
Use this page to define the port numbers required for creating the new domain.
Each port value can be set independently. You are free to change them to suit your operational environment.
When you click Finish, the new domain is created on your disc and the server instance is registered with the IDE.
When the new domain is created, a confirmation message is displayed in the Instance Creation Results tab in the Output window.