Salesforce lead assignment rules define how leads are assigned to owners. By creating an active lead assignment rule in Salesforce, your team can choose to use the active lead assignment rule when deploying net-new leads from Radius. This way, your demand generation professional can automate how net-new leads from Radius are assigned to owners once they are deployed to Salesforce so leads are automatically assigned to the right owner.
Need help with Salesforce? Here's some information on how to set up assignment rules in Salesforce Classic. (Salesforce Documentation)