Inside of the RadChart tag on your page, you can edit the Chart Title by editing the chart like this:
<telerik:RadChartID="RadChart1"runat="server">
<ChartTitle>
<TextBlockText="Topic: Enrollment Region: West">
</TextBlock>
</ChartTitle>
</telerik:RadChart>
Hopefully this answers your question. The RadChart is easy to customize if you go to the configuration wizard inside of VisualStudio. I've provided a screenshot to help you find this wizard.