The installation program will ask you for the license server name and port number. If you know them at install time, enter them. When you start MapInfo Pro, you will be connected to the license server and a license will be checked out automatically.
If you do not have this information at the time you install MapInfo Pro, the installation program will enable you to continue with the installation without filling in the license server name and port number. You will have another opportunity to connect to the server when you start MapInfo Pro.