Invoices will only be sent from HosPortal if you have activated the automatic send feature, or you send them manually. Refer to the help article regarding sending invoices here.
You can search for and review past invoices from the Invoices menu under your profile by selecting your name at the top right of the menu bar ('A' in the screen shot below) and selecting 'Invoices' ('B').
In the Invoices menu, select the appropriate hospital and role from the filter ('C') and search for the relevant shifts by entering a date range ('D').
Any shifts within the selected dates will appear in the window, alongside the delivery status of any associated invoices ('E'). You can review the invoices that have been sent, and then download them if you wish, by selecting the PDF icon.