First you need to be logged in on CodeWigs now vist the Withdrawal Page if access the page and you geting restricted error like Page Not Found it implies that your account is not set as authors you are just a normal user.
Next provide the total amount your want to withdraw and select your withdrawal method prefrences.
And click submit to place your withdrawal
Notes: Withdraw are paid on every first 3 working business day on every month and you must make sure you place you withdrawal before then.