Partial captures can be done through the QuickPay Manager or in your backend. When signing in to the manager, navigate to Payments, and find the payment you wish to capture. If capturing from the payment overview, click the capture icon to the right of the payment.
This opens an overlay with 2 options: “Full capture” and “Partial capture”, select partial capture, now you will be able to change the amount you wish to capture.
If you click on the payment and open it, you simply click the Capture button, and you will be given the same options as written above.
Your Anyday ordres can also be captured partially depending on how it's integrated on your website, either directly on your site (Magento and WooCommerce) or through Quickpay, it can be done in both places.
See video guide below