Add a Description
With the gadget or macro in Edit mode, on the right side, click the Chart description tab
Click into the text box and begin typing your description
Click Save to lock in your changes
Change the Formatting
Use the different options below to customize the size, color, style, etc. This uses the same text editor as Jira comments.
Adjust the Position
Chart description position settings live in the separate Display options tab. If you do adjust these options, the changes will not appear in the Live Preview.