The system has a limitation; it does not allow more than one increment in a month, and hence you will not be able to initialise payroll for your employee. Please either combine both these increments as one, or you can enter the other increment effective the following month. As for the current month prorated increment concern, please enter the prorated increment into a pay element. Please refer to the steps below:
Create the Increment
Go to the Core module and click Employment Details.
Select the employee and click Basic Rate.
Click New and enter the Effective Date of the first increment.
Enter the increment amount and Save.
Click New again and enter the Effective Date of the other increment, effective the following month.
Create the Increment Adjustment Pay Element and Process in Payroll
Go to the Payroll module and click Pay Element Setup.
Click New and create a pay element, e.g., Increment Adjustment.
Select Allowance and click Next.
Select as None of the Above and click Next.
Select Standard Allowance and click Next.
Select Free and click Finish.
In the property screen, select the necessary property and click Save.
Go to the Pay Records of the employee.
Right-click and insert this pay element and enter the prorated amount.
Click Save and Recalculate.