Yes, set your Transaction Entry Date to 013121, then open Batch Payroll Module, Process Payroll, Manual Processing, set date to 013121, hit Next a time or two and it will take you to the first check of the pay period, hit Recalculate.  Cycle through all the checks for Jan the repeat for Feb and Mar.  But just know, the 941 for 2021 has not been released yet.  They expect it out Wed or Thur, however, you can still do your 941 and print it but it's possible there could be changes once the 2021 form is released.