You can edit all settings in a test before the test runs. While the test is running, you can edit a test only to disable it or to set an end time. You cannot edit a completed test. Follow these steps to edit an existing test.
Click on the View Tests button to see a list of all existing tests.
Select the test name. The Test Summary window opens.
Click on the Edit button. The test opens for editing.
Note: If the test status is completed, the Edit button will not be active.