Using the Tab Key worked but the operation is far from intuitive. When I completed the 3rd line and used the Tab Key a 4th line did not appear. Instead the 3rd line went blank. I thought the information I had just filled in was erased until I realized the 3rd line had moved up to the 2nd line and the entry for the 1st line had disappeared entirely. After completing the 4th entry I checked the completed K-1 form using "view forms" and saw that all 4 entries were recorded.
