Once a test has been published it will appear in the list of published tests. In that list is a link to the test configuration, which is where changes to the user interface can be made. Click the link to view the configuration.
Fig 1: Highlighting the test configuration link in the published tests list.
Expand the Global Section, followed by the Operation and Display options.
Fig 2: Highlighting the Global and Operation & Display sections.
Check the required tabs and then save the configuration. The next time the test runs the tabs that aren't checked won't appear.
Fig 3: Highlighting the tab selection options.