First, navigate to the Detail page of a Job.  This can be done by clicking on the  ‘Jobs’ link on the left side navigation bar.  Depending on your selection, you will see Jobs scheduled for the current Day, Week or Month.  

Clicking into any of these Jobs will put you at its Detail Page, where you will find pertinent information, as well as  a ‘Create Invoice’ button. Once you click on this button, the system will create a brand new Invoice based on the information that exists on the Job Detail Page.