payment run using PMW

The method of payment run is as follows:

1) tcode- f110

2) tcode-fbpm1

3)tcode- bnk_app

After 1 and 2, when user executes step 3, the payment advice is generated in his spool.

In this scenario, person1 may execute 1 and 2 step. and person2 will execute (approve the payment) step3.

My requierment is to send the spool request to person1 instead of person2.

I am getting the username of person1 but dont know where it is to be assigned.

i am using bte2040 in RFFOAVIS_FPAYM to determine whether mail is sent or print is generated.

Please help!