If you’re trying to add a site to the intranet zone through GPMC and are getting this message:

You have chosen to import settings that are only compatible with Windows
Server 2003, Internet Explorer Enhanced Security Configuration. These
security settings will be ignored on machines where the Enhanced Security
Configuration isnt enabled.
To import settings for the enhanced security configuration,click Continue.
To import setting for users where the enhanced security configuration isnt
enabled, click Cancel, then remove the enhanced security configuration and
import the standart settings from the previous dialog.
To import setting for users who login to computer in both scenarios,
configure a GPO/IEAKPackage for each scenario and deploy both packages to the
same users.

To create the GPO for computers where Enhanced Security Configuration isn’t enabled