A compare organizer cannot be possible, as it is not comparing elections of two or more presidents, in this context. A Flow chart is helpful to describe processes, explaining steps and changes, exactly what we need here. A Venn Diagram is used to compare as well, two things that share something in common. An finally the timeline is mostly used for narrating events in chronological order.
They can make groups and support people in the community who have been through human trafficking or people who are going through human trafficking right now.