You can approve/reject multiple invoices at once, while in the approvals tab (not the details view of the invoice) by selecting the invoices you want to approve or reject using the check boxes, or by holding down 'Ctrl' on your keyboard and clicking the rows with your mouse that you want to approve or reject.
When you've selected all Invoices you want to approve, go ‘Actions’ on the right corner and then ‘Approve’.
If rejecting a group of invoices a dialog box will appear and a comment must be made before they are rejected. This comment should inform the invoice coder(s) on why you are rejecting the invoices.
Please note, group approve and reject should ONLY be used in specific cases where you don't need to see the image. This is not how we recommend normal approval and rejection of invoices be done. We recommend going through each invoice in the details view to make sure you don't miss anything.