Depending on which text you want to format, select the appropriate item:

To format all chart titles and labels (excluding the chart legend), click the chart to change all the text to your font and color choices.

To format the text for all data points in one series only, select the text box for one data point in the series.

To format the text in an axis label, select the text.

To format the text for all series labels, select the series label box.

To change the text in a chart legend, select the legend.

Use the format bar or the Fonts window to format the text.

See Changing Text Size and Making Text Bold, Italic, or Underlined for instructions.