Payouts under vendor request for a better cashflow

Would be very helpfull to have a button where vendor can see how much money is available for him and request his payout. Also, I would like to be able to set a time after sale for the payment to be available. In my case, I pay 30 days after the product was sold. Resuming: A button in vendors profile where he can see the amount that is already available and press to request his payout.