Number ranges

Hi,

I am in implementation project how to give number ranges for customers and doccument typs

Customer Group

0001 Internal Customer

0002 Receivables u2013Export - with Agent

0004 Receivables u2013 Domestic With Agent

0005 Subsidiary

0006 Associates - (other than subsidiary)

And here 2 organizations, 4distribution channels, 7 divisions

Factory Sales

VA11 Inquiry IN

VA21 Quotation QT

VA01 Order OR

VL01N Delivery LF

VF01 Billing F2

Sample Sales

VA11 Inquiry IN

VA21 Quotation QT

VA01 Order OR

VL01N Delivery LF

VF01 Billing F2

Scrap Sale

VA11 Inquiry IN

VA21 Quotation QT

VA01 Order OR

VL01N Delivery LF

VF01 Billing F2

Sales Return

VA11 Inquiry IN

VA21 Quotation QT

VA01 Order RE

VL01N Delivery LR

VF01 Billing F2

export returns

VA11 Inquiry IN

VA21 Quotation QT

VA01 Order RE

VL01N Delivery LR

Export Sales

VA11 Inquiry IN

VA21 Quotation QT

VA01 Order RE

VL01N Delivery LR

VF01 Billing F2

J1IA101 ARE1

please help me how to give number ranges to 2 organizations