Hi - I have a client who needs their customers to be able to pay for something in payments, which I have set up, but in addition to that:
1 - The customer will also be able to check their own remaining balance somewhere and pay it off and/or
2 - Someone else can check their balance and make donations towards it
Most of the customer’s fee ends up being paid by donations from other people. I found this for making it possible to accept donations: Accept Donations Of Varying Amounts | Max Classic
The part I haven’t figured out yet is how does a person know how much to donate / what the remaining balance is for the person they’re donating to.