Choose the Reserve... menu item to retrieve a copy of the
  specified object from the CMS library and mark it as
  reserved.

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

  Reserve places a copy of the object in your current
  default directory, and marks the object as reserved.

  When you choose Reserve, a dialog box appears, allowing
  you to specify options for the reserve transaction.