Fill in the Groups field with the name of one or more
  groups. If you do not supply a group name, CMS
  automatically displays all the groups in the library.

  Full or partial wildcards are allowed; for example, you
  could restrict the group view to groups that begin with
  the characters DOCU by typing DOCU* in the Groups field.

  You can specify multiple groups by separating each group
  name with a comma.