How do I import last year's H&R Block tax return to online TurboTax Premium?

I am trying to start with TurboTax Premium as a married filing jointly personal return with a sole proprietorship business. Last year I used H&R Block online to file. How do I import last year's tax return data from the 1040 into TurboTax Premium. Online help was abysmal. e.g. "Choose helpful links" or "Select last year's option" Select what and where?