From here you can set amount of minimum payout . just the amount and click on update button your setting will be updated.
You can make a payout request only from instructor panel. To make a payout request just go to instructor panel then go to payout list. And click on payout request button.
After clicking the button just type the payout amount and click on confirm your request will be sent. But you can not make request less than 10 because your minimum amount is set 10 .