To add a new measure, view the measures in the middle pane, right-click in the middle pane and select add measure. This can also be done when viewing measure groups in the middle pane. Alternatively to create measure which is very similar to an existing measure, view the measures in the middle pane and right-click, select "copy measure". The same dialog box appears as for "add measure" with most of the fields filled in. Notice that the measure name has the suffix "- Copy". Change the name in the Measure Name field and make any other alterations and click OK.