Mid Year HSA Conversion Balance

Summary:

We are doing mid-year Conversion including (HSA).

Our requirement is - Say Employee has Opted for $3000 in the Legacy system during Open Enrolment as Employee HSA Contribution and till the Conversion date, 2000 $ is already deducted from Legacy System from Employee's Paycheck. Now the remaining $1000 has to be deducted from the remaining Pay period.

I think this can be achieved by benefits Balance (initializing it as $2000) and linking it to the EE- Rate.

However, I am not able to see the HSA balance name in the Compensation Level LOV.

Any pointers?

Any other Out of box way to achieve this?