WordPress plugin development

It’s a payment receivable and payable feature name Payment info

Work need to be done

Separate sell collection option from existing plugin Payment info (vendor payment + sell collection) new option name will be sell payment

Ad refund option/button in existing filter with advance and due
Add paid option/button in existing filter with pending and received

Please check previous option how it was setup for better understand
Add delivery option to WooCommerce shipping
Add delivery option to plugin filter

Please check previous option how it was setup for better understand
Add payment option to woo commerce custom payment
Add payment option to plugin filter

Manage advance payment collection and due payment collection according to order deposited
If order has no second payment then due collection is not needed
Add delivery method in due collection report

If woo commerce return status update then create a refund ticket in sell payment.
Find the delivery charge in order.
Match the order id with advance collection and due collection.
Then subtract delivery charge from total collection and make it payable.
Pending report and paid report for refund needed like sell payment report.
Default woo commerce refund option will be update from sell payment plugin while paying the refund.
Copy this plugin to my another site