You can distribute vacation or sick pay accrual wages on an employee payment in step 2 of Process Payroll -- Review & Edit Paychecks.
To do this, you should have already created accrual and wages payroll categories for your employee's sick or vacation time. You'll create the accrual payroll category to track the hours that accrue for the employee; you'll create the wage to distribute the accrued hours. (To create an accrual and To create a wage)
Step by step