How can I have my iExpense workflow to send an FYI to other manager that is not my immdiate approver

Dear Oracle Payable & iExpense Guru,

We have a request from several of our organization unit managers that want ability for employee's iExpense reports to go to them just as an FYI. It means the FYI manager's don't have to take any action on the expense reports but they wanted to be aware of such expense reports.

In our organization the Event organizer staff will travel on behalf of our other Organizational Units during the year. When the employee from the Event OU submit their iExpense it'll go to their immediate manager and they'll review and approve it. However, since the expense was for other Organization Unit the other OU manager needs to see it just as an FYI and trasparency. Currently we are doing this step manually via our google mail.