I use 50mm f/1.8 lens(with Canon T3i) for portraiture. It's quite easy when only one subject is involved :Open the aperture wide, focus on the eyes(most of the times) and you get a nice portrait.
How do I do it when more than one person is involved ? Suppose if there are two persons facing the camera,where do I focus ? I want a nice blurred background; If you focus on one person, the other person becomes a little blurred(which is not desirable). How do I get sharp image of both of them in the portrait with a reasonable blurred background.
Also I noticed that, when I am in Auto mode, the camera automatically selects two focus points , if two human faces are in the scene. Can I select more than one focus point in Av,Tv or Program mode ?