Prospects enter Net-Results from external Web forms (more about that later), file imports, manual data entry, or Salesforce.com synchronization. They’re assigned to campaigns by defining entry conditions for campaign steps, which the system calls “actions”. These conditions are not themselves segments but can be copied from existing segment definitions or built with the standard segment-creation interface. Campaigns can have multiple actions, each with its own entry conditions. Each lead is assigned to the first "child" action whose entry conditions it meets.