Details about the lottery for rising sophomores can be found here. Hopefully that answers the first question.
With the lottery for Sharp (and other buildings in the same offering), you bring ALL of the people you want to live with in the suite to the lottery at the time of the lowest number of someone in your group. Each individual gets a room in the suite.
One person cannot get a suite. In fact, one person might not be able to occupy an individual room without a few others. The idea is that Sharp is for groups of students who want to live together.
Unless something has changed, this info is correct. You can always call ResLife during business hours – (518) 276-6284.