I can share some information about creating a project in QuickBooks Online (QBO), @KIRSTEN2020.

The feature to set multiple addresses to a single customer is currently unavailable in QBO. That would be a great addition to the current features that we have, so I'll take note of it.

I also invite you to visit the Firm of the Future site. It contains resources and tips to help easily use QuickBooks. 

Let me know if there's anything that I can further assist with your customer transactions. I'm always here if you need more help. Have a wonderful day!