Minimum Payout

First of all a big thanks for this plugin.

we ran a crypto currency business site, where we have some products to sell using the crypto coins,
we ran a affiliate program using this plugin. since we are using crypto currency like bitcoin our minimum payout is like 0.00001 or so. but the plugin do not accept it as payout. plz guide me how do i setup minimum payout less then 1 and up to 6 decimal point like 0.000001

thanks in advance.