Code:
Sub Insert_Column()
Dim ans As Long
ans = InputBox("Insert into Column")
Columns(ans).Insert Shift:=xlToRight
MsgBox "You have Inserted column " & ans
End Sub
Sub Delete_Column()
Dim ans As Long
ans = InputBox("Delete Column")
Columns(ans).Delete
MsgBox "You have Deleted column " & ans
End Sub
as well as copy the AA column formulas to New columns