How to check/audit forward contract txn of a bank

Hi everyone

pls anyone share your knowledge of auditing forward contracts entered by a bank with respect to forex transactions...

What are the main documents that are reqd. to be audited/checked by a concurrent auditor...

Pls share any type of formula enabled excel sheet of doing concurrent auditing of a forex transaction or fw contracts processed by a forex bank branch..

share anything with reagrd to forex business transaction of bank..how these txn processed..wht are the procedures...products offered by a typical forex bank branch...

thank you...