N=1, but I put my gap year activity in my primary (Americorps), because I knew exactly what dates I would be serving, and how many hours are required. You can put that an activity WILL END at a future date, but you can't put that it WILL START at a future date, so I just put the date I typed it as the starting date, and the correct ending date, and in the activity description just put I will begin service on _____ date. I think it worked out well and it ensures that they will see how many hours I would be contributing and they can add them up right then. Also, not all of my secondaries gave me an opportunity to say what I am currently doing during the gap year!