add payroll relationship group parameter to calculate prepayment payroll flow

Summary:

add payroll relationship group parameter to calculate prepayment payroll flow.

Content (please ensure you mask any confidential information):

Hey,

We have a need to add payroll relationship group parameter to Calculate Prepayment process so we can run specific population. I copied the seeded Calculate Prepayment flow, added seeded payroll relationship group parameter (smart LOV) to the new flow pattern I created. It display and took the parameter, but It didn't work limit the population as per the payroll relationship group parameter. Appears I'm missing the link between the new parameter and the underlying process. Does anybody have any knowledge/experience on what the underlying process of Calculate Prepayment flow is and how to link it back to the