How do I get a summary of the jobs completed on a multi-location account

There are two different ways to get a summary of the jobs completed on a parent/child account

The first is by going to history->invoices->export summary as shown in the following screen shot. Make sure to check the box that will include child accounts. 

The second is by going to billing information->bills->add bill->then hit "add line item"->select the different locations and the respective invoices->check itemize invoice(s) on bill. You can also name the bill to the left of the itemize invoice(s) check box.