Solved
View Influence of Nurturing Campaign on Opportunities
I want to see how many people were influenced by a nurturing campaign, THEN were added to an opportunity. The keyword in the previous sentence is THEN.
Another way to say it is: I want to see who are members of one program, THEN became members of another program.
Is there any way to put a date range on the MEMBER OF filter? Is there a way to chronologically view successes?