To allow customer to pay partially later but already takes the goods.
Process order with (partial) credit
1. Must select the customer (can create a new one) to track the credit
2. Pay using the method of payment "Customer credit" for the full or partial order. The remaining can be paid directly with other payment method such as cash.
Order to pay and deliver later
Using Sales Order for personal account.
Order to pay and get product later
Use regular Sales Order for this process.
This will generate Delivery to be processed later. Then you will create invoice that can be reconciled (check sales order process)
Track credit and reconcile payment
Report receivable and bank/cash reconciliation.
Partner Aging Balance
Use this report to check the receivable balance of each customer (customer credit).
From menu Accounting/Report/PDF Report/Partner Aging report.
Reconcile payment with bank/cash statement
Use regular bank or cash statement to reconcile the payment.
See Accounting process "Cash and Bank".