Start with EdrawMind Desktop Guide
Insert Callouts
Callouts are additional information on a particular topic that can form their branches. They can also be used as sticky notes to remind map readers to request feedback, highlight the importance, add notes, and more. Here's how.
Launch EdrawMind. Click Create to get a new mind map or Open the file saved on your computer. Choose a topic, click Insert, and choose Callout in the Start menu.
Note: You can create a callout label by right-clicking a topic and selecting Insert > Callout.
Enter text or annotations in the Callout box.
Note: Like floating topics, callouts can have their branches and subtopics, whose formatting can be adjusted in the right-side panel > Style.