1. The Legend font properties used to control the legend text appearance in chart widget.

2. In Formatting Property click on Legend Property.

3. Enter Following details in Legend Font Property:
Font Family: Times New Roman
Font Size: 12
Font Weight: Bold

4. Fill above details in edit box, As Shown in figure below:

5. Font Family: The font family used to apply the font styles to the legends.

6. Font Size: The font size is used to add required font size in chart widget.

7. Font Weight: to make changes to the font appearance in widget.