Hi there, Marygrace.

The assigned one location on the invoice applies to the entire transaction. For now, there's no option to divide the invoice to multiple locations. You might want to create different invoices for each location. 

You may also want to consider using class tracking. This feature lets you allocate a class on each line item on the invoice. Let me route you to this Help article for more details: How To Set Up And Use Class And Location Tracking.

I'll make sure to get back here if you have follow-up questions. Thanks for dropping by.