@joshuashaneadkin 

@Nick_M 

"How to split a bank transaction (expense) to multiple locations?"

Currently, in QBO, there's no option to divide the Expense transaction into multiple locations. Only the Class you split to multiple locations.

The only other option is to write a Journal Entry later to allocate expense transactions to multiple locations.
(To write Journal Entry: Left Dashboard > Create "+ New" > Other > Journal Entry). You should see the Location column if it's ON with Plus or Advanced.

Hope this helps!