Company metadata allows you to capture and report on data custom to your organization in a standardized format. Greenhouse Recruiting includes company metadata for candidate tags, close reasons for job openings, interviewer tags, referrers, rejection reasons, and sources.
Note: Interviewer tags are only available to Advanced and Expert subscription tiers.
To manage company metadata, select Configure 
icon, then click Custom Options on the left.
Scroll to find Company Metadata.
Sometimes it may be necessary to delete company metadata as your organization grows or changes.
General considerations
When deleting company metadata, you're able to replace the deleted metadata with an existing metadata, or to delete the metadata entirely.
To replace metadata, use the option I want any entity using this [company metadata] to use this instead and choose existing metadata from the drop-down menu when deleting.
Example: In the example above, any existing entities using the candidate tag Knows SQL will instead use the candidate tag SQL developer. Any reports or existing candidates referencing the candidate tag Knows SQL will update to SQL developer upon deleting the candidate tag.
Alternately, when removing company metadata, use the option I want to permanently delete this [company metadata] without re-assigning to permanently delete.
Example: In the example above, the candidate tag Knows SQL will be completely removed from all reports, candidates, and associated entities, and won't be replaced.
When company metadata is permanently deleted without re-assigning, the metadata is completely removed from all candidates, reports, jobs, or other associated entities in the hiring software.