field in Receipt

Hi Sage Team, I work in a school that received a tuition for school year September to June while our books run from January to December. We produce a receipt once a year at the end of January while the full amount of tuition fees are due. On the receipt we will show payment received both from September to December (previous year) and January to June (current year). I need help on determine the field that I have to put on the Receipt for showing those two payments received. Thanks in advance.