Specifying how many outline levels to show
As you work, it's sometimes helpful to show only some outline levels below a topic. You can do this by selecting a topic that has subtopics, then specifying how many levels of subtopics you want to see.
1.Select the topic or subtopic.
You're going to specify how many levels of subtopics to show below the selected topic.
2.Choose View>Levels, then choose the levels of subtopics to show from the sub-menu.
Only the levels of subtopics you chose appear for the selected topic. All subtopics below the level you specified are hidden.