You can start metadata under a document profile.
To map custom metadata:
On the Custom Metadata header region, select the Rules as follows:
Server — Select the Web content server where the content profile is defined.
Content Profile — Select the content profile that includes the rules that define custom metadata fields.
Rules — Select the Rules set that specifies the metadata fields.
If you do not select a Rules set, then BI Publisher loads the metadata for all Rules under the Content Profile.
If a metadata field is required a Y is displayed in the Required column.