Single ending of several workflows

[Gordan]

Hello all,
 
I have requirement to streamline workflow for confirming of request for
payment.
 
Approver can have up to several hundreds of request per day (in extreme
situation) from the same requester (organization). I would like to give
him/her option to approve with radio button or flag because the most
important thing is amount and all other data are not so relevant for
approval.
 
I am thinking of something like ALV list on which will be information =
about
amount, due date and vendor data with option (radio button or flag) to
approve or reject in single row. Process is more oriented on cash flow =
than
on rejection of requests (approval is more or less matter of days, =
rejection
is very rare). It will be nice to have sum of all approved amounts.
 
If I want to do this on such way, multiple workflows (each started with
single request for payment) need to end in single end. Is that possible? =
Can
you suggest alternative or different approach
 
TIA
 
Gordan