Within your reseller partner portal, click on the "My Account" tab and option on the side. Then click on the "Request Payout" link.
Note: Prior to requesting a payout, you need to ensure you meet the minimum requirements, this can be found within your commercials of when you initially joined.
You will need to fill in the amount you were wanting to withdraw.
Important: You will also need to attach a tax invoice with "Reseller Services" as the description. The tax invoice must include your bank account information and relevant tax number.