Iexpenses - audit flow

Hello

I have a question on iexpenses, and especilly the flow on the at random selection of the iexpenses reports which are audited eg by compliance dept or auditor ..

could someone also briefly explain the flow

in the case of an audit , eg we have iexpense reports and these are approved, and some of them , at random, eg 1 out of 5 will be audited

how does that flow go ?

-- > does this auditor receives these audits under his responsibility

--does he get a notification that he needs to check this ?

thanks !!

els