Schedule for SMP to include SML and the £0.00 after 39 Weeks

Currently, the schedule for SMP on PayCircle only includes the 39 weeks paid amount and then doesn't factor in the full SML of 52 weeks and the final 13 weeks unpaid. After the 39 weeks, on the payroll, it looks like the employee is back to full time work, when they are still on SML

Describe the Challenge

More accurate SML