In the "Invoices" tab in the voyage drawer, you can quickly see and manage the Pending Receivable/Payable document lines, as well as the Invoices connected to the voyage. The tab is only visible to voyages that do not have status "Estimate".
The sections show you a list of all document lines that have not yet been assembled. Clicking on any of them allows you to edit certain parameters. Selecting one or more document lines will allow you to assemble them.
The invoice-section shows a list of all assembled invoices connected to the voyage. There er multiple filters to allow you to quickly and efficiently find the invoice you are looking for. Clicking on an invoice will open a document drawer, showing more details.