Click New in the Instance Name list.
Enter the hostname and port in the Server field.
Enter the Site Name.
This value uniquely identifies the server. Each server that is participating in load balancing or failover needs to have a unique identifier. This is also used to shorten the cookie length by mapping the server URL to the server ID. The syntax is:
To edit an instance name, click an entry in the Instance Name list and change the values accordingly.
Click Save in the Platform Service main page.