You can approve invoices in the Invoicing module from the Approval area.
Please follow the steps below to approve an invoice.
1. Click on Awaiting Approval in the Invoices section.
2. Click on the Invoice line to expand it to show the details.
3. You have two options available to you:
Approve - to approve the invoice, moving it onto the next approver (if there is one) or to Finance for processing.
Reject - to reject the invoice back to Finance with a comment.