Documentation for JIRA 5.2. Documentation for other versions of JIRA is available too. 
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First of all, as mentioned in the KB: Custom Field Not Appearing in Issue Navigator Search Criteria , you HAVE to associate the custom field to ALL issue types. However this will cause other projects to have the unnecessary custom field in their project. There is workaround to hide the unnecessary custom field from these project so it won't appear.
Steps: