title: SQL Server Reporting Services: Limit Legend to One Series for Chart that has Multiple Series
body: <p>I have a chart with these characteristics:</p>
  
  <ul>
  <li><p>chart type is XY (scatter )</p></li>
  <li><p>all XY data have x-values that are integers; they are called "Update Cycle" numbers. This represents "score" data from a given program. </p></li>
  <li><p>in addition to the values that produce the XY data, I've added two other elements to the "Values:" list: one that is the average of the XY data for any Update Cycle (x-axis) value, and another that is the average of "similar programs" for any Update Cycle. These elements are plotted as lines ("trend lines") on the chart. </p></li>
  <li><p>Category Group is Update Cycle number</p></li>
  <li><p>Series Group are (1) PersonID and (2) ProgramID</p></li>
  </ul>
  
  <p>It all plots fine, but here's my problem:</p>
  
  <p>If I add a Legend, it wants to add Legend entries for each and every point for each and every person (because of SeriesGroup1)  - I imagine it's also showing legend entries for the second series, but there are so many for the first series, I can't read anything.</p>
  
  <p>Question: How do I supress legend entries for the first series and only display the two legend entries for the 2nd series?</p>