You can organize tests into groups so that many tests
  can be treated as a single entity.

  To create an empty group in the DTM library into which
  you subsequently place tests, perform the following
  steps:

  1. Pull down the Maintenance menu.

  2. Choose the Create menu item and the Group... submenu
     item.

  To place a test or group into an existing group,
  perform the following steps:

  1. Pull down the Maintenance menu.

  2. Choose the Insert menu item and either the Test...
     or Group... submenu item.