Yes, if your payment is not on 1040X line 16 switch to Forms Mode and enter it directly on the form.
If you paid on your original return it will be on line 16. If there is an amount owed with the amendment, it will be on line 20.
Ignore any vouchers like the 1040V that print out. That is for the original return or what the original return would have been if it didn’t need correcting. Don’t pay the amount on the 1040V. Pay the amount on the actual 1040X.
