How to add or remove search engines
Start in your SEO --> Rankings module, and click the "Settings" button to the right of the time period selector.
Under the "Metrics" heading, check the respective boxes to enable the display of rankings for Google, Google Local, Google Mobile or Bing. Uncheck those same boxes if you want to remove tracking for those search engines.
Those metrics will then be displayed in both the graphical display and the table view.