You may have decided during planning that you wanted more retention categories than the ones predefined in Enterprise Vault. If this is the case, you must create your own retention categories. Alternatively, you can edit the predefined retention categories to suit your needs.
If you configure Enterprise Vault to archive from Exchange managed folders, it can automatically synchronize managed content settings to managed folder retention categories. Enterprise Vault creates managed folder retention categories automatically. For more information, see the Administrator's Guide.
To create an Enterprise Vault retention category