Hi,
Thank you for posting in Symantec community.
It's not an automated process. You will have to to do this job manually.
SEPM can only tell the list of machine where SEP client is not installed if unmanaged detector is configured.
You can configure the Notification condition for unmanaged detector & then SEPM will shoot an email with more details.
Email alert can be a quick way to identify and deploy SEP client on those machine.