I am trying to create a nurturing campaign and I have seen "traffic cop" and "gatekeeper" and "programs" mentioned as best practices, but I cannot find any resources on how to set these up - just the basic "drip campaign" instructions.
Outlines of "Traffic Cop" and "Gatekeeper" types of smart campaigns can be found in this webinar. You can also see some people presenting on applied versions of them in this one.