@MauraF ,
to be able to enter nthe pension details ( issuer, distribution amount, taxable amount etc. etc. ), you need to "pension " from the list of incomes. Do not choose Substitute 1099-R> This then will show a 1099-R entry screen. Here choose " Foreign address" for the issuer.
Note that it matters as to what type of pension is being received. US-Ireland tax treaty dictates how pensions are taxed and by whom. For most treaties, Govt. / public fund based pensions ( like Social Security equivalent) are taxed only by the issuing country. So please tell me more as to type of pension ( private, public or personal or what ). Should I assume that the recipient is now a US citizen or Irish citizen ? Is his taxhome US?
Is there more I can do for you ?