For internal demarcation, use the 9 Grid. For external, use the Pie-Chart.
Warm Regards, JY
Joey Yap Consulting Group Sdn. Bhd, 19-3, The Boulevard, Mid Valley City, 59200 Kuala Lumpur, Malaysia.
Joey Yap Private Limited, 36 Robinson Rd, #02-125, City House, Singapore 068877.