S-Corp Health Deductions Off cycle

I need to run an off cycle payroll to post the cost of health deductions paid by the s-corporation to the employee/shareholders YTD pay history to ensure it’s in boxes 1 and 16 on their W2’s. We use paycor and for the additional run, I’m trying to figure out if this needs to be a post only or if the payroll taxes for fed and state need to be processed? Anybody have any thoughts or experience with this?