Paid in person and receipts
Cash at the door is recorded on the task, and the customer gets a receipt instead of a bill.
Task link → Payment for this clean; Money → Send receipt
For a client billed after each clean, the task card asks Payment for this clean before Mark complete: email an invoice (the default), or paid in person by cash, check, Zelle, Venmo, card at the door or other. A paid-in-person clean is invoiced, marked paid with that method, and the customer gets a receipt.
On the Money tab, Mark paid… records the method on any invoice and Send receipt emails a receipt for any paid invoice. Card payments from the client page send a receipt by themselves.