You can choose top or bottom captions or both.
Properties

Property | Description |
|---|---|
Enable | True: Display the caption. False: Do not display the caption. |
Label | The text to be used for the caption. Type a value. |
Font | The font used for the caption. Click browse (...) and select font settings from a font dialog box. |
Justification | The justification of the caption relative to the scale bar. Choose from Centre, Right, and Left. |
Caption Y offset | The vertical distance between the caption and the scale bar in millimetres at map scale. |