Personal leave for teachers

I do payroll for a Preschool. The staff are a mixture of teachers, childcare workers and the office administrator.

I have just discovered that the teachers have a cap on their personal leave. As teachers they are entitled to 25 days of personal leave (pro-rata for part time staff). In 2018, a cap was brought in. The cap comes in after 6 years of employment. From this time there is a cap of 120 days. They are still entitled to 25 days of personal leave. However at the end of the year they can only add 10 unused days to the cap, even if they took no personal leave. How do I put this into MYOB. I use Account Right.  The childcare workers and the office administrator are not affected by this cap. Any ideas appreciated. Regards Ellen