Every unit will receive two nominations, regardless of size. For units with 25+ youth, they will receive 1 additional nomination. So a unit with 26-50 youth members is allowed 3 nominations. Units with 51-75 youth members is allowed 4 nominations; 76-100 youth members, 5 nominations and so on.
The YES Award should be presented to someone within your own unit who has given their time to help provide a quality program for the youth within your Scouting unit. There is no tenure requirement for this award, but your unit committee MUST approve and submit it.