the groups and few settings can be done while migrating. Please refer the install guide which comes with CD(install media).
refer the section "About migrating groups and settings from Symantec System Center"
To migrate server and client groups and settings from the Symantec System Center to the Symantec Endpoint Protection Manager, you must read about and understand how this process works. For example, your existing settings in the Symantec System Center may or may not be inherited from server groups. You have to choose whether or not to preserve this inheritance. Legacy primary and secondary management servers have the settings that apply only to those servers and not to the clients that they manage. The reason is that these servers may need to be protected differently than how the clients that they manage are protected. For example, these serversmayprovide other services that may need to have certain files types excluded from scans. With the Symantec
System Center, you can specify that all servers inherit their settings from those specified for the server group. Or, you can specify custom settings for each server. After you migrate settings for management servers, these settings appear in the LiveUpdate Settings Policy and the Antivirus and Antispyware Policies. These policies are applied to the groups that contain the management servers after you migrate them to a Symantec Endpoint Protection client. During migration you decide whether these settings are inherited from the server group, or are specified for each server.
Legacy client settings can also be inherited from the server group or inherited from a management server. After you migrate settings for clients, these settings appear in the LiveUpdate Settings Policy and the Antivirus and Antispyware Policies. During migration you decide whether these setting are inherited from the server group or from the management server.