Export list of clients in SEPM group

Hi,

We have SEP 12.1.6 running in our environment of around 4000 clients. We have close to 30 SEP Groups inside SEPM. We are currently upgrading SEP clients. Is there any way we can export list of all the clients in a particular group to text or csv file so that HelpDesk can send notification to them regarding upgrade and possible system reboot?

Thanks.