Copy And Paste Cell Range VBA

I created the following code to copy the contents of b6 down. However, I need to modify the code to copy this formula =IF(M6=calculations!$E$34, N(B5)+1,N(B5)) down the range.

Sub copyformulas()
'copy and paste cells with formulas down. Select B6 throubh AH6 and copy the formulas down to the last employee ID.
Dim lr As Long
For Each SheetName In Array("All employees annualized", "All employee salary", "All employee hourly", "allmaleee", "allfemaleee", "cohort analysis", "minority", "nonminority")
With Worksheets(SheetName)
lr = .Cells.Find(What:="*", SearchDirection:=xlPrevious, SearchOrder:=xlByRows).Row
.Range("b6:b").AutoFill Destination:=.Range("b6:b" & lr)
End With
end sub