When you install the IPS package in a new boot environment, the active boot environment is not modified and the package is installed in a new boot environment.
$ beadm create beName
$ beadm mount beName /tmp/beName
$ pkg -R /tmp/beName install group/feature/multi-user-desktop
$ beadm activate beName
After the package is installed, the desktop optimizations are available in the new boot environment. Now you must enable optimizations. To enable optimizations, see Enabling Desktop Optimizations.