Feature Idea - crediting account, for upfront payment
i would like to request for upfront payment mode (pre-paid).
for example, recurring invoice of USD500 per month. Customer would like to pay USD5000 upfront as advance payment that is deductible every month until credit exhausted.
i believe the feature is called credit account?
Month 1 invoice is USD500 total, deduct from credit (advanced payment), available credit is (USD4500).
Month 2 invoice is USD500 total, deduct from credit, available credit is (USD4000).