Subtopics are used to provide details about their parent topic. They branch off other topics (including floating topics or a callout topics).
Add multiple levels of subtopics to provide increasingly detailed information about a topic. Then you can show information only to the desired depth using the Detail command.
Select a topic.
Do one of the following:
On the Home tab or on the Insert tab, in the Insert group, click Subtopic
Press INSERT
If the topic already has subtopics, click a subtopic and press ENTER.
When the new topic appears on the map it remains selected so you can edit it right away.
Type the new text.
Press SHIFT+ENTER to create line breaks as you enter the topic text.
Press ENTER when you are finished.
The placement of topics is controlled by the map's growth direction.