Steps:

1. Log into system
2. Locate and click on the Office Administration module
3. Go to the Suppliers section
4. Select Pay Supplier Invoice from the presented options
5. This directs you to a pay supplier invoice form. Complete the form by filling in all the necessary details i.e. Date, supplier, select the mode of payment, account type, account to withdraw from, amount paid etc
6. Once done click on the Pay Bills button to complete the payment. This clears the invoice amounts