Use the below link to learn how to setup a license server
Log into the license server
Go into configuration
Set up site ID or ID's with the following syntax "SiteID = 1,Paul's Site"
Save and restart the license server
Go into the license you want to assign the site ID to, and hit edit. This will now let you use the drop down box to set your site ID.
Go into the emulation parameters and set the site ID under Emulation > Common > Site ID