Adding offices in new countries

Hi,

We are adding offices in 4 countries to our existing R12 EBS implementation. Can anyone point me to some concise documentation that will show all the setup steps? We need to turn on the following modules for these countries:

Payables, iExpense, iProc, Purchasing, Cash Management, Inventory, E-bus Tax and Fixed Assets.

I am worried that we will miss something.

Thanks, vtforme