In order for the Leave Pay to be automatically added to the employee's Basic Salary, do the following:

1.  Set up the Leave Types as Earning Codes (POWERpay>>Maintenance>>Payroll Setup>>Earnings>>Earning Types)

2.  Ensure that the Earn Category for each leave type is flagged as  Pay.

The payroll will multiply the Amount (Hrs) x Earn Factor x Unit Rate and add this amount to the employee's Basic Salary (Employees>>Pay Profile>>Employee Pay).