water billing system

Paging, analytics (charts), usage charts (like Meralco), admin should only view clients, reports (daily, weekly, monthly, yearly), printed receipt (overlaid on official receipt), teller clients page (entire row clicked will go to client billing history page), client billing history page and previous client billing history page (must have information added about previous billing. billing (automatic past reading) Here's how it is. Consumption <= 15 is 30 pesos when residential then it increases by 2.5 pesos until it reaches 25 cubic meters and then it's 3 pesos. In commercial, the minimum is 40 pesos and then it increases by 5 pesos until it reaches 25 cubic meters and then 6 pesos when it exceeds 25. But the way it should be is changed on the admin side. The penalty for Nagcarlan is 0.02 in the first month and then the next month is 0.04 until it reaches 0.36 which is 18 months then everything that exceeds that is a 0.36 penalty. That penalty is only affected by the bill itself, not the overall bill. Can it be paid all at once? That should be possible. For example, he will pay for the first 3 months. That's it.