You can convert any main topic, subtopic, or callout to a floating topic in Map view.
To convert the topic to a floating topic:
Select the topic.
Click Edit - Convert to floating topic.
Shortcut: Drag the topic away from its parent while holding the Shift key, and then drop it on an empty spot on the map.
The topic will become a floating topic that can be positioned freely on the map. Its subtopics, callouts and attached map items (icons, images) will remain with it.