Deduct average holiday pay hours from accrued holiday total

Currently clients can either use average holiday pay to calculate the average rate to pay for holidays, or they can accrue holidays based on hours worked or a pay code set and pay them at the base hourly rate, but they can't pay employees at the average rate and also deduct from the accrued holiday total. What would be beneficial would be if an employee could accrue holidays based on the average holiday pay code set, and then deduct the hours paid (at the average holiday pay rate) from the accrued holiday total on the leave tab in the employee record.