Training Platform - What do the Green Dots v Red Dots on Timeline within campaign builder represent?

As an admin builds a Campaign, a Timeline of the Campaign will also populate to the left. Along the Timeline, important dates will be marked by a green dot or a red dot:

RED is due date (mandatory Training Type) or expiration date (optional Training Type)

GREEN is the dates of the assignment

See example below:

Learn more about the Campaign Builder:

Training Platform - Campaign Builder Video Course

Training Platform - Campaign Builder Editor Overview

Training Platform - Campaign Use Cases Overview