When creating new invoices we are in a rush, so is there a way to have their previous outstanding invoices pop up right away, without having to go to other screens?

Hi, doug26

Move to Sales centre > Invoices tab > click the Overdue button > create a duplicate from google chrome tab/firefox tab (right-click browser top tab> dropdown menu > select Duplicate).

Now you can create invoices from the first tab and use duplicate tab to check outstanding invoices

Comment back for further clarifications.