Weekly annualised hours and payment

Kammedli

Hi All,
I need some help regarding one of our employees. Normally, we do monthly payroll and pay hourly by timesheets on Xero Payroll.
One of our employees who works as a school run driver wants to be paid the same amount every 52 weeks so we want to annulise his hours. Our employer agreed to £250 gross pay every Friday which would include his holiday pay as well. Normally these drivers are on a flat rate of £60/day and normally there is 190 working days in a year. I have worked something out but I want to see if I have done the right thing. I am using Pay template rather than timesheets but the holiday I have to enter every week?
Any help would be appriciated.

Thank you

Kamilla