Quickbooks Online/Transfer/Journal Entry Question

In QBO we have two checking accounts (two separate businesses). Sometimes money is transferred from one account to another that needs to be categorized so it will hit a certain liability or expense. However, because QBO is only a double entry accounting system, it won't let me categorize it, it will only let me record the transfer and match the transfer between the accounts. Does someone know what type of a journal entry or other action I can do so that it doesn't throw off the balance in each of the accounts? I'll give an example: Rent for one of our properties was paid to checking account A. It should have been paid to checking account B which is the account we use to handle money for our properties. I need to categorize that rent to a specific property so that it will show up on the P&L. There is no option to add a category when matching bank transfers in QBO. I assume it's some type of journal entry but I've yet to figure out how to do the journal entry so that checking account A shows the transfer going out, checking account B shows the transfer coming in and that same amount is also showing as a deposit for the rental property that paid the rent and the balance of each account is correct. Thanks in advance for any help!