Setting HSA Rates

Summary

per check issues

Content

We are setting a HSA plan and are having some issues with the rates.  We need the annual to per check to calc based on the effective date not the pay period date. For example, if the HSA is effective 3/1/2017, we need the element/deduct on the 3/3/2017 paycheck even though the pay period is 2/19/17-2/25/17.  Currently the HSA will not start deducting until the 3/10/2017.  How do we need to set the Rate or Element to start taking on the correct paycheck? Please note I am Benefits and not IT/Programmer so I am looking for plain language.--Thanks, Sue