the borrowers must form five - member units that , together with the company ' s fields workers , closely supervise the loans . peer pressures substitutes for collateral because the team ' s first two borrowers have to begin repaying the principal plus interest over a six - week term before the other four can take out loans . the default rate is fixing at 16 centimeters .
The first two borrowers must start repaying the principal plus interest over a six-week period.