Made a test account for this lol.
It is at Finance --> Withdrawal however please note that you can't get your payouts in bitcoin as they already stopped using it as payout option (Smart move IMO),
Quoting it below:
2017-12-06 Due to enormous growth of Bitcoins rate and commission all withdrawals in this currency has been stopped. Most probably, forever. Use alternative methods like Litecoins or Advanced Cash to withdraw and convert you money to Bitcoins. Bitcoin nowadays is something you should use to invest and store the money, not for daily payments. For payouts we are also considering some other altcoins and we appreciate you feedback in social networks about this topic.
These are the only ones available:
P.S Stop wasting your time on captchas they're not worth it. Too much effort with a little payout