Choose the Unreserve... menu item to cancel one or more
  reservations of a generation of an element.

  You cannot unreserve a generation held by another user
  unless you hold BYPASS privilege or unless you are
  granted BYPASS access to the element by an access
  control list (ACL).

  If you have more than one reservation of an element or if
  you are canceling another user's reservation, you must
  specify the exact reservation to be canceled.  You do
  this by using either the Generation option or the
  Reservation Identification button in the Options dialog
  box (choose the Options button).

1  –  Ur sf

  If you click on an object or objects before choosing
  the Unreserve... menu item, the Selected box contains
  those objects.  CMS performs the unreserve transaction on
  the selected objects.

2  –  Ur ef

  Fill in the Element field with the name of the object or
  objects whose reservations are to be canceled.

  The object can be an element name, a group name, a
  wildcard expression, or a list of these separated by
  commas.

3  –  Ur rf

  Fill in the Remark field with text to be associated with
  the cancellation and logged in the history file with this
  unreserve transaction.

4  –  Ur opb

  The Options button brings up a dialog box, allowing
  you to specify the following options in the library:

  o  A generation number for the reserved generation
     to be canceled

  o  A reservation identification number for the
     reserved generation to be canceled

  o  Whether CMS should delete the file from your
     default directory after the cancellation, and
     optionally, a file name and location other
     than your default directory.

4.1  –  Ur ogf

  Fill in the Generation field with the specific generation
  number of the reservation to be canceled; for example,
  3B2.

  If you have more than one reservation of the same element
  generation, you must choose the Reservation
  Identification option to unreserve the reservation.

4.2  –  Ur rio

  Use the Reservation Identification option when you have
  multiple reservations of the same element generation.

  If you have more than one concurrent reservation for the
  same generation, you must identify the specific
  reservation to be unreserved. If multiple users have
  reserved the same generation of an element and you have
  BYPASS privilege or have been granted BYPASS access to
  the element by an access control list entry, you must
  identify the specific reservation to be unreserved.
  Each reservation is assigned an identification number.

  Fill in the Reservation Identification field with the
  number of the specific reservation to be canceled; for
  example, 2.

  To determine the identification number of each
  reservation, do the following:

  1. Pull down the View menu.
  2. Choose the Reservation menu item.
  3. Double click on the reserved element to
     expand it into individual reserved generations.

  The identification number appears in parentheses at the
  beginning of each line that lists a reserved generation.

4.3  –  Ur dfu

  Click on the Delete files when unreserved button to
  delete all versions of the unreserved file from your
  default directory.

  If you choose this option, you can also use the Delete
  file specification field to specify a different location
  or a different file specification (or both) for the file
  to be deleted.

4.4  –  Ur dfs

  Fill in the Delete file specification field with a
  different location and/or name of the file to be deleted.