Lurch
4
You can do this with some entries in the custom scripts section if you have a power user subscription.
This would select for example the credit card as the default account in the receipt hub when you check the “paid in full” box;
$(document).ready(function() {
nominal = 1250;
currency = 'GBP';
$('#dropBankAccount').val(nominal + '-' + currency);
There’s more info on custom scripts here;