Credit Card Outstanding Transactions Management (Details)

Hello
This program sends notifications to employees who have Credit Card Transactions.

There is an option to send notifications to managers as well. But in order for this to work, we need supervisor hierarchy to be setup.

In our system, we use position hierarchy instead.
Is there a way to send notifications to the employees managers as well ?
If so, could you please let me know how or point me at a direction ?

Thanks

Len