The “Group Wizard” is used to generate the flows and groups and the SmartFlow tab was created to manually set up flows and groups, or view or modify those groups created with the “Group Wizard.” You can also create similar but new groups based on the one created by the Group Wizard if it uses some of the same ports and same protocol and traffic patterns.
So you have to create the groups using the “Group Wizard and the SmartFlow tab are used to modify these groups. If the Flows are modified using the SmartFlows Tab, the values that are changed become the values that are used in the SmartFlow configuration.