Can client pay multiple invoice at once

I have several clients that can, at times, receive several invoices that are due within a few days and they would like to be able to pay all of them with one payment (i.e. a “Pay Balance” or select multiple invoices and pay at once).

I don’t see any way to do that.
Am I missing something or is that not available at this time?

It’s not currently possible, payments in the database are linked to a single invoice.