How to disable partial payments from customers on Quickbooks Online?

I send recurring Quickbooks invoices to my customers and I utilize the automatic late fee feature as well as collecting the payments with Quickbooks Payments.  I have some customers that are opting not to pay the late fee, and making a partial payment (their total bill less the late fees).  I could have sworn when I set everything up there was an option to enable partial payments and I turned it on (seemed like a good idea at the time).  Now I would like to disable the partial payment feature so they have to pay the entire invoice (their bill + late fees) but I am having difficulties figuring out how to do so.  Anyone know how this can be done?