Navigate to your Wallets tab and click on THB Withdraw button. 

Enter the amount of THB that you would like to withdraw. When done, click on the Withdraw THB button and Confirm.

If you had activated your Google 2FA, you would be required to enter your 2FA code to continue.

After that, a withdrawal confirmation will be sent to your email.  Click on the Complete your withdrawal button to continue.

If it is your first time withdrawing, you will be required to add your bank account first. You may only withdraw to a bank account that belongs to you.

After adding your bank account, you will reach to the withdrawal page. Simply click on the Withdraw button to finalize your withdrawal.