Sick/ Vacation/ OT Rules

It would be very helpful if I could make a certain overtime rule for one specific day in a work week, or multiple if needed. Sick days do not count towards overtime pay in my case, so I'd love to be able to select “apply as only regular pay” on the manual entry card. That way, the OT calculator only starts applying overtime after 48 hours rather than 40 for having one sick day in the week. I know I can go to settings and change the OT calculator to “start OT pay at 48 hours, “ but it would mess up all past and future normal weeks.