Setting to turn off Paying for all invoices in customer portal

Setting to turn off Paying for all invoices in customer portal

We enable our invoices to be paid via authorize.net. When a customer gets an email of an invoice and clicks on the link to view/pay for it, if he/she has other outstanding invoices that were enabled for online payments, there will be a banner that says "Total Payable Amount via Online Payment $xxxxx Pay now"

Can you please create a setting to turn off this banner? In the business that we are in, occasionally, a realtor wants to pay an invoice for their client as a gesture/gift. If that customer has other outstanding invoices, we don't want the realtor to see that and see how much the total is for all outstanding invoices. Therefore, we want a setting that turns off the ability to see "Total Payable Amount" for a customer. Is this possible?