the debtors must form five - member groups that , along with the bank ' s market workers , closely supervise the loans . volume pressure substitutes for collateral because the bank ' s first two subprime have to begin debts the principal including loan over a six - week process before the other members can taking out loans . the interest level is fixed at 16 million .
The first two borrowers must start repaying the principal plus interest over a six-week period.