Open the child, click Edit, and under Fees choose Discount:
- Dollars off a month: enter the Discount a month.
- Percent off the fee: enter the Discount (% of the fee). It's a percent of the month's fee, before government funding.
Then:
- Discount shown as: what the invoice line says, e.g. Sibling discount or Staff discount.
- Last month of the discount (optional): pick any day in the last month it applies. Leave it empty to keep it until you remove it.
Part months are prorated, and a discount never takes an invoice below zero.