Server 2008 R2 Shutdown client computers after scheduled updates

Hey there

Platform: SBS 2011
We would like to schedule automatic updates on client computers after hours and then shut them down after they have been installed.
Alternatively we could schedule updates at an earlier time with restarts as necessary, and then shut down the computers at a later time. Are there any GPO settings that can allow us to do either of these things?

Thanks in advance

MIS5000