To build a custom search
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On the Action menu, click Find to display the Find window.
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In the Find box, click Custom Search.
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In the In box, select the domain, container or Managed Unit you want to search, or click Browse to locate a domain, container or Managed Unit.
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Do one of the following:
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On the Custom Search tab, follow Steps 4-9 of the procedure outlined in Steps for using advanced search options.
 
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On the Advanced tab, specify a search filter using LDAP syntax.
 
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Click Find Now to start your search.