Adjusting shopping list per meal

It would be awesome if there was a way to adjust the shopping list based off of how many servings you want to make per meal.  For instance, my family might want to eat a certain meal but not another.  If I generate the list for 4 people, I end up with too much food for the meals that I make for myself but if I keep it for myself, I end up with not enough food when my wife and teenagers want to eat what I'm having as well.