Selection for tax scrutiny: additional categories with concealment indicators may be examined subject to CCIT approval and allocation adjustments. Procedures expand permitted selections for income-tax scrutiny beyond numerical limits to include survey-detected additional income, definite reports of concealment including from enforcement agencies, and cases involving recurring substantive issues with substantial tax implications, all subject to CCIT approval; allocation of cases may be adjusted to Additional CIT/JCIT ranges or to Income Tax Officers depending on case nature, also with CCIT approval.