If you are using the Funnel Timeline layout for your project maps, you can select some Activities as the parent of lists rather than members of chains. ResultsManager recognises the word "(list)" at the end of the topic text.
The Power User mode Edit dialogue has a check box next to the Activity text that adds or removes the word "(list)" from the text:
The "(list)" check box in the Edit dialogue
Checking this box will append "(list)" to the topic text if not already present, and un-checking will remove it. Most of the time, you can ignore this feature. If you are creating sequenced lists of actions as subtopics, enable this check box on the parent topic, or add the word "(list)" by hand.