Set oracle iExpenses

Have a question.

Its possible change the workflow when I set in the "securing Attributes" a list of user that used a same Center Cost for create a Expenses Report, because i need use a generic user, and cannot create a many user to approval a expense report.

In the generic user I used a "ICX_HR_PERSON_ID" attribute for add many employees in the same user, but, when i create a expense Report, the notification send to the same employees.

I will hope can help me.