SEPM in a controlled environment

Hello, I need to control USB port access on 3 non-networked machines that currently have SEP 12 installed on them.  It tells me it has the Device Control elements installed, but I see no SEP Manager option.  All I get is the standard Status screen which does not allow me to change Policies. Is the SEPM a seperate module from the standard SEP install? And can I use this on a stand alone machine environment without any networking (ie. classified environment). Thank you for any help or suggestions!