Payable Request Responsibility

Hi All,

I have a few questions about Oracle Payable seeded responsibility (Payable Request)  if you have time please :

1- Can this responsibility be assigned to the internal employee i.e if the user account associated with employee the user can use the responsibility to create invoice but he would not be able to inquiry the invoices,

    except not associating the user account with any employee.

2- Once the user fill invoice information using payable request responsibility,  then hit submit button, the system create invoice directly in AP even the invoice still in-process phase (Not Approved yet).

is there any option to prevent invoice from being created until the invoice get approved (Something similar to Internet Expense Report Export) ?