Where do I enter this information?  What if they did not have any income in prior year, therefore, did not file a tax return?  

Also, is anyone else having problems with the final review continually looping and never completing?  I have had basic returns with just W-2's, returns with W-2 and 1099-NEC, returns with W-2 and 1099-R - everyone I have done is not completing the final review (and these are from prior year transfers)?